diff --git a/src/api.ts b/src/api.ts
index adc6891..3f80ee9 100644
--- a/src/api.ts
+++ b/src/api.ts
@@ -79,7 +79,8 @@ export function requestUserData(authToken: string) {
   };
 }
 
-export function requestRegisterUser({ firstName, lastName, email, phoneNumber, password }: UserRegisterFormValues) {
+// We use snake_case in order to fetch and display field errors from the API without any additional formatting
+export function requestRegisterUser({ first_name, last_name, email, phone_number, password }: UserRegisterFormValues) {
   return (dispatch: AppDispatch) => {
     dispatch(registerUserRequest());
 
@@ -90,10 +91,10 @@ export function requestRegisterUser({ firstName, lastName, email, phoneNumber, p
         'Content-Type': 'application/json',
       },
       body: JSON.stringify({
-        first_name: firstName,
-        last_name: lastName,
+        first_name: first_name,
+        last_name: last_name,
         email,
-        phone_number: phoneNumber,
+        phone_number: phone_number,
         password,
       }),
     })
diff --git a/src/components/FormErrors.tsx b/src/components/FormErrors.tsx
index f12681d..0b0dca7 100644
--- a/src/components/FormErrors.tsx
+++ b/src/components/FormErrors.tsx
@@ -4,17 +4,24 @@ import { Text, StyleSheet, View } from 'react-native';
 
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
 const FormErrors = ({ errors }: { errors: Record<string, any> }) => {
-  if (!Object.keys(errors).length || !['non_field_errors', 'detail'].some((errorField) => errorField in errors)) {
-    return null;
+  if (!errors) {
+    return;
   }
 
   let errorFormatted;
-  if ('non_field_errors' in errors) {
+  if (errors instanceof Error) {
+    // This check might backfire on us as it's too general. We do not wish to display the error message to the user
+    // Hence we display this generic one
+    errorFormatted = 'Kunne ikke sende inn skjemaet! Prøv igjen senere...';
+  } else if ('non_field_errors' in errors) {
     errorFormatted = errors.non_field_errors?.[0];
   } else if ('detail' in errors) {
     errorFormatted = errors.detail;
   }
-  if (!errorFormatted) errorFormatted = 'Kunne ikke sende inn skjemaet, prøv igjen...';
+
+  if (!errorFormatted) {
+    return;
+  }
 
   return (
     <View style={styles.container}>
diff --git a/src/modules/login/Login.tsx b/src/modules/login/Login.tsx
index 55571ce..8975b3b 100644
--- a/src/modules/login/Login.tsx
+++ b/src/modules/login/Login.tsx
@@ -9,7 +9,7 @@ import theme from 'src/theme';
 import useLogin from './useLogin';
 
 const Login = () => {
-  const { isLoggingIn, errors, control, setFocus, onSubmit } = useLogin();
+  const { isLoggingIn, isSubmitted, errors, loginError, control, setFocus, onSubmit } = useLogin();
 
   return (
     <ScrollView>
@@ -50,6 +50,7 @@ const Login = () => {
         >
           <Text>Glemt passord?</Text>
         </Button>
+        {loginError && isSubmitted && <FormErrors errors={loginError} />}
         {isLoggingIn && <ActivityIndicator color={theme.colors.neufOrange} />}
       </View>
     </ScrollView>
diff --git a/src/modules/login/useLogin.tsx b/src/modules/login/useLogin.tsx
index c084014..7064011 100644
--- a/src/modules/login/useLogin.tsx
+++ b/src/modules/login/useLogin.tsx
@@ -22,7 +22,7 @@ const useLogin = () => {
   const {
     control,
     handleSubmit,
-    formState: { errors },
+    formState: { errors, isSubmitted },
     setFocus,
   } = useForm<LoginFormValues>();
 
@@ -37,7 +37,7 @@ const useLogin = () => {
     }
   }, [isAuthenticated, navigation]);
 
-  return { onSubmit, isLoggingIn, setFocus, control, errors: { ...errors, ...loginError } };
+  return { onSubmit, isLoggingIn, isSubmitted, setFocus, control, errors: { ...errors }, loginError };
 };
 
 export default useLogin;
diff --git a/src/modules/register/UserRegister.tsx b/src/modules/register/UserRegister.tsx
index 1d46de6..14de836 100644
--- a/src/modules/register/UserRegister.tsx
+++ b/src/modules/register/UserRegister.tsx
@@ -13,8 +13,18 @@ import useUserRegister from './useUserRegister';
 const { Toast } = Incubator;
 
 const UserRegister = () => {
-  const { isRegisteringUser, onSubmit, isValid, control, errors, registerError, setFocus, toast, setToast } =
-    useUserRegister();
+  const {
+    isRegisteringUser,
+    onSubmit,
+    isValid,
+    isSubmitted,
+    control,
+    errors,
+    registerError,
+    setFocus,
+    toast,
+    setToast,
+  } = useUserRegister();
   const isDisabled = isRegisteringUser || !isValid;
 
   return (
@@ -22,15 +32,15 @@ const UserRegister = () => {
       <View style={theme.card}>
         <ScrollView>
           <FormInput
-            name="firstName"
+            name="first_name"
             label="Fornavn"
             control={control}
             errors={errors}
             autoFocus
-            onSubmitEditing={() => setFocus('lastName')}
+            onSubmitEditing={() => setFocus('last_name')}
           />
           <FormInput
-            name="lastName"
+            name="last_name"
             label="Etternavn"
             control={control}
             errors={errors}
@@ -48,10 +58,10 @@ const UserRegister = () => {
               required: 'Kan ikke være tomt!',
               validate: (v) => EmailValidator.validate(v) || 'er ikke en gyldig e-post',
             }}
-            onSubmitEditing={() => setFocus('phoneNumber')}
+            onSubmitEditing={() => setFocus('phone_number')}
           />
           <FormInput
-            name="phoneNumber"
+            name="phone_number"
             label="Mobilnummer"
             control={control}
             errors={errors}
@@ -70,10 +80,9 @@ const UserRegister = () => {
             onSubmitEditing={onSubmit}
           />
           <View style={styles.errorBox}>
-            <FormErrors errors={errors} />
-            <FormErrors errors={registerError} />
+            {registerError && isSubmitted && <FormErrors errors={registerError} />}
           </View>
-          <Button fullWidth disabled={isDisabled} onPress={onSubmit} style={styles.registerButton}>
+          <Button fullWidth disabled={isDisabled} onPress={onSubmit} style={styles.registerButton} type="submit">
             <Text>Registrer meg</Text>
           </Button>
           {isRegisteringUser && <ActivityIndicator color={theme.colors.neufOrange} />}
diff --git a/src/modules/register/useUserRegister.tsx b/src/modules/register/useUserRegister.tsx
index c1c0732..9cbade9 100644
--- a/src/modules/register/useUserRegister.tsx
+++ b/src/modules/register/useUserRegister.tsx
@@ -7,10 +7,10 @@ import { useAppDispatch, useAppSelector, usePrevious } from 'src/hooks';
 import { ToastProps } from 'src/types/toast';
 
 export interface UserRegisterFormValues {
-  firstName: string;
-  lastName: string;
+  first_name: string;
+  last_name: string;
   email: string;
-  phoneNumber: string;
+  phone_number: string;
   password: string;
 }
 
@@ -19,7 +19,7 @@ const useUserRegister = () => {
   const navigation = useNavigation();
   const isAuthenticated = useAppSelector((store) => store.isAuthenticated);
   const isRegisteringUser = useAppSelector((store) => store.isRegisteringUser);
-  const registerError = useAppSelector((store) => store.registerError) || {};
+  const registerError = useAppSelector((store) => store.registerError);
   const [toast, setToast] = useState<ToastProps | null>(null);
 
   const isAuthenticatedPrev = usePrevious(isAuthenticated);
@@ -27,11 +27,13 @@ const useUserRegister = () => {
   const {
     control,
     handleSubmit,
-    formState: { errors, isValid },
+    formState: { errors, isValid, isSubmitted },
     setFocus,
     setError,
+    clearErrors,
   } = useForm<UserRegisterFormValues>();
   const onSubmit = handleSubmit((values) => {
+    clearErrors();
     if (!isValid) {
       setToast({
         message: 'Noen av feltene er ikke fylt ut riktig',
@@ -46,7 +48,7 @@ const useUserRegister = () => {
 
     // Display error messages from API on form fields
     Object.keys(registerError).forEach((key) => {
-      setError(key as keyof UserRegisterFormValues, { type: 'manual', message: registerError[key] });
+      setError(key as keyof UserRegisterFormValues, { type: 'server', message: registerError[key].join('\n') });
     });
   });
 
@@ -56,6 +58,25 @@ const useUserRegister = () => {
     }
   }, [isAuthenticatedPrev, isAuthenticated, navigation]);
 
-  return { isRegisteringUser, onSubmit, isValid, registerError, control, errors, setFocus, toast, setToast };
+  useEffect(() => {
+    clearErrors();
+    if (!isSubmitted || !registerError) return;
+    Object.keys(registerError).forEach((key) => {
+      setError(key as keyof UserRegisterFormValues, { type: 'server', message: registerError[key].join('\n') });
+    });
+  }, [registerError]);
+
+  return {
+    isRegisteringUser,
+    onSubmit,
+    isValid,
+    isSubmitted,
+    registerError,
+    control,
+    errors,
+    setFocus,
+    toast,
+    setToast,
+  };
 };
 export default useUserRegister;
diff --git a/src/reducers.ts b/src/reducers.ts
index 9f53614..740c9fe 100644
--- a/src/reducers.ts
+++ b/src/reducers.ts
@@ -77,7 +77,7 @@ export default function appReducers(state = initialState, action: any) {
       return { ...state, isRegisteringUser: true, registerError: null };
 
     case REGISTER_USER_FAILURE:
-      return { ...state, isRegisteringUser: false, registerError: formatErrors(action.registerError) };
+      return { ...state, isRegisteringUser: false, registerError: action.registerError };
 
     case REGISTER_USER_SUCCESS:
       // eslint-disable-next-line no-case-declarations