To resolve the issue of not being able to log in to your Fender Tone account via the app, follow these detailed steps:

1. Check App Version: Ensure that you have the latest version of the Fender Tone app installed. Outdated versions may have bugs that prevent logging in. Check the App Store or Google Play Store for updates.

2. Restart Your Device: Sometimes, simply restarting your device can resolve any temporary glitches or issues related to the app.

3. Check Internet Connection: Ensure that your device has a stable internet connection. Try switching between Wi-Fi and mobile data to see if that resolves the issue - learn more.

4. Reset Password: If you're having trouble with your login credentials, try resetting your password. Use the "Forgot Password?" feature in the app to initiate a reset.

5. Account Verification: If you received any confirmation emails when you created your Fender Tone account, make sure to verify that your account is active. You may need to check your spam folder for verification emails.

6. Reinstall the App: If you still can't log in, uninstall the app from your device and then reinstall it. This can help fix corrupted files or settings that might be causing the login issue.

7. Clear App Data (For Android): If you're using an Android device, go to your device's settings, find the Fender Tone app, and clear its cache and data. This can resolve issues related to corrupted data.

8. Check Fender’s Support Resources: If the problem persists, consult Fender's support articles for any known issues regarding account logins. There's information that states some users had issues that were addressed in app updates - learn more - learn more.

9. Contact Fender Support: If none of the above solutions work, consider reaching out to Fender's customer support for assistance. They may be able to provide insight into your specific issue or account status.

Following these steps should help you regain access to your Fender Tone account and allow you to download presets successfully.