[AMB-174] refactor: remove referral require

src/components/form/SignUpForm.tsx

@@ -56,7 +56,7 @@ const FormSchema = z
     password: z.string(),
     confirm_password: z.string(),
     password_hint: z.string().optional(),
-    referral_code: z.string().min(1, { message: 'Required.' }),
+    referral_code: z.string().optional(),
     accept_tos_and_pp: z.boolean(),
     accept_condition_1: z.boolean(),
   })
@@ -349,10 +349,8 @@ export function SignUpForm() {
                   </FormControl>
                   <FormMessage />
                   <FormDescription>
-                    MiBanco signups are currently available by invitation only.
-                    <br />
-                    Please enter your invite code to complete the signup
-                    process.
+                    If you have an invite code please enter to complete the
+                    signup process.
                   </FormDescription>
                 </FormItem>
               )}

src/components/form/WaitlistForm.tsx

@@ -149,6 +149,16 @@ export const WaitlistForm: FC<{
               >
                 I have a Referral Code
               </Button>
+
+              <Button
+                type="button"
+                onClick={() => setView('sign-up')}
+                disabled={loading}
+                variant={'ghost'}
+                className="mt-4 w-full"
+              >
+                I am an Amboss Subscriber
+              </Button>
             </div>
           </CardFooter>
         </form>