Fix iPhone | Cannot reset password | This Apple ID is either not valid or not supported

 Here are the steps on how to fix the "Cannot reset password: This Apple ID is either not valid or not supported" error on your iPhone:

1. Go to iCloud.com: https://www.icloud.com/.
2. Click on the Sign In button.
3. Click on the Forgot Apple ID or Password link.
4. Enter your Apple ID email address.
5. Click on the Look Up button.
6. If your Apple ID is found, you will be given the option to reset your password.
7. If your Apple ID is not found, you will need to create a new Apple ID.

Here are some additional things to check if you are still getting the error message:

• Make sure that you are entering your Apple ID correctly.
• Try using a different web browser.
• Try resetting your router.
• If you are still having trouble, contact Apple Support.

Here are some reasons why your Apple ID might not be valid or supported:

• You may have entered your Apple ID incorrectly.
• Your Apple ID may be inactive.
• Your Apple ID may have been banned or disabled.
• Your Apple ID may have been compromised.

ADDITIONAL STEPS

**1. Verify Apple ID:**

Ensure that you're entering the correct Apple ID email address. Double-check for typos and verify that it's the same account associated with your iPhone.

**2. Check Apple's System Status:**

Before troubleshooting, make sure that Apple's services are up and running by checking their System Status page. Sometimes, issues like this can be due to temporary service outages.

**3. Use the Apple ID Account Page:**

Try resetting your Apple ID password through the Apple ID account page on a computer or another device. Here's how:

1. Open a web browser and go to the [Apple ID account page](https://appleid.apple.com/).

2. Click on "Forgot Apple ID or password?"

3. Enter your Apple ID email address and click "Continue."

4. Choose the option to reset your password.

5. Follow the on-screen instructions to reset your password.

6. Once your password is reset, try using the new password on your iPhone.

**4. Update iOS:**

Outdated software can sometimes cause issues. Make sure your iPhone is running the latest version of iOS. Go to `Settings` > `General` > `Software Update` and update if available.

**5. Check Internet Connection:**

Ensure your iPhone is connected to a stable Wi-Fi or cellular network. A poor connection could prevent the password reset process from working correctly.

**6. Use Two-Factor Authentication (if enabled):**

If you have two-factor authentication enabled for your Apple ID, make sure you have access to your trusted devices or phone numbers to receive verification codes.

        If you think that your Apple ID may have been compromised, you should change your password immediately and enable two-factor authentication. You can also contact Apple Support for help.

I hope this helps!