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If you are having trouble signing into High IQ, this guide covers the most common causes and how to resolve them.

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Common Causes

Symptoms: Tapping “Continue with Apple” does nothing, shows a blank screen, or returns an error like “Sign in failed” or “Authorization error.”Solution:
1

Check your Apple ID

Make sure you are signed into your Apple ID on your device. Go to Settings > [Your Name] and verify you are logged in.
2

Verify Face ID / Passcode

Apple Sign-In requires device authentication. Ensure Face ID, Touch ID, or your device passcode is set up and working.
3

Check Apple ID restrictions

Go to Settings > Screen Time > Content & Privacy Restrictions > Account Changes and make sure it is set to Allow.
4

Restart and retry

Force-close High IQ by swiping up from the app switcher, then reopen the app and try signing in again.
If you previously used “Hide My Email” with Apple Sign-In, High IQ will use the same private relay email. You do not need to remember it — Apple handles this automatically.
Symptoms: Google sign-in popup does not appear, gets stuck loading, or returns a “network error” or “cancelled” message.Solution:
1

Check network connection

Google Sign-In requires an active internet connection. Switch between Wi-Fi and cellular data to rule out network issues.
2

Update Google app

If you have the Google app installed, make sure it is up to date. Go to the App Store > Updates and update any Google apps.
3

Clear Safari data

Google Sign-In uses Safari for authentication. Go to Settings > Safari > Clear History and Website Data, then try again.
4

Try a different Google account

If you have multiple Google accounts, try signing in with a different one to determine if the issue is account-specific.
Symptoms: You were previously signed in but now see a message like “Session expired,” “Token invalid,” or “Please sign in again.”Solution:
1

Sign out completely

Go to Settings (gear icon) in the app, scroll down, and tap Sign Out.
2

Force-close the app

Swipe up from the bottom of your screen to open the app switcher. Swipe High IQ up to close it completely.
3

Reopen and sign in

Open High IQ again and sign in with the same Apple or Google account you used originally. Your data will sync back automatically.
Authentication sessions expire periodically for security. This is normal behavior and does not mean your data has been lost.
Symptoms: A generic error message appears when attempting to sign in, with no specific details.Solution:
1

Check for app updates

Open the App Store, search for “High IQ,” and install any available updates. Authentication issues are often fixed in newer versions.
2

Check iOS version

High IQ requires iOS 16 or later. Go to Settings > General > Software Update and update your device if needed.
3

Restart your device

A full device restart can clear transient system-level issues that interfere with authentication.
4

Reinstall the app

If nothing else works, delete High IQ and reinstall it from the App Store. Your account data is stored in the cloud and will sync back after you sign in.
Symptoms: Sign-in appears to succeed (no error) but the app shows a spinner or blank screen and never loads the home screen.Solution:
1

Wait 10-15 seconds

On first sign-in, the app sets up your account and syncs initial data. This can take a moment on slower connections.
2

Check your connection

High IQ requires an internet connection to complete account setup. Make sure you have a stable Wi-Fi or cellular connection.
3

Force-close and reopen

If the loading screen persists beyond 30 seconds, force-close the app and reopen it. The setup may complete on the second launch.
Symptoms: After reinstalling the app, your previous sign-in method does not work or creates a new empty account.Solution:
1

Use the same sign-in method

You must use the exact same sign-in provider (Apple or Google) and the same account you originally registered with. Signing in with a different provider creates a separate account.
2

Check Apple 'Hide My Email'

If you used Apple Sign-In with “Hide My Email,” Apple will automatically use the same private relay email when you sign in again from the same Apple ID.
3

Contact support if needed

If you believe you are signing in with the correct account but your data is missing, contact support. We can help verify your account.

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Authentication Service Status

High IQ uses Clerk for authentication. In rare cases, Clerk may experience outages that affect sign-in across the app.
If multiple users report sign-in issues at the same time, the authentication service may be temporarily unavailable. Wait a few minutes and try again.

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