To resolve your login issue with the CLUB4 App, follow these step-by-step troubleshooting steps:

1. Check Your Credentials: Ensure that you are entering the correct email address and password associated with your CLUB4 account. Double-check for any typos.

2. Reset Your Password: If you're unsure about your password, use the "Forgot Password" link on the login page to reset it. Enter your email address, and follow the instructions sent to your inbox to create a new password.

3. Update the App: Make sure that the CLUB4 App is updated to the latest version. Check the Google Play Store for any available updates. Sometimes, older versions can have bugs that affect login functionality - learn more.

4. Verify Account Status: Confirm that your CLUB4 membership is active. If the membership has lapsed, you may be unable to log in. You might want to check your membership status through the CLUB4 Fitness website.

5. Clear Cache and Data: On your Android device, go to Settings > Apps > CLUB4 App. Tap Storage, then select Clear Cache and Clear Data. This can often resolve issues caused by stored data - learn more.

6. Reinstall the App: If clearing the cache doesn't work, uninstall the CLUB4 App from your device, then reinstall it from the Google Play Store. This will ensure you have a fresh copy of the app without any corrupted files.

7. Network Connection: Ensure that your internet connection is stable. Try switching between Wi-Fi and mobile data to see if the issue persists.

8. Contact Support: If none of these steps resolve your login issue, consider reaching out to CLUB4 support for assistance. You can find contact information and support options in the app or on their website - learn more.

Following these steps should help you regain access to the CLUB4 App. If you continue to experience problems, direct assistance from customer support may be necessary to resolve account-specific issues.