Developers already cleared that the game progress didn’t delete, that happens because update the Google Account login. And when users upgraded to the new version, they saw an updated Google account login and accidentally created a new Google account. So make sure you sign in with your old account but if already sign in with a different account and lost your data, then check below steps to fix Pokemon Go Account Reset Bug and get your Progress back.
How to fix Pokemon Go Account Reset Bug and get your Progress back
Step 1: First, Sign out from Pokémon GO app and then uninstall the game.
Step 2: To sign out head over to Pokémon GO->Main Menu->Settings->Sign Out. (sign out twice to ensure proper log out)
Step 3: Now open Safari browser and remove Google login from your browser.
Step 4: For that open Settings -> Safari -> General -> Password. In the password browse google.com and select “accounts.google.com”.
Step 5: Now click on edit button in the top right corner and click on red button to delete /forget Google Account from Safari.
Step 6: Download the Pokemon Go App again and install it.
Step 7: Open the App it’ll ask you to enter your birthday, make sure you enter the same birthday you entered before.
Step 8: Now Login to Google Account and will redirect you to the Safari web browser to complete the login process.
Step 9: Now login with the same email address which you used to create your Pokémon GO account.
Step 10: Now touch the “Allow” button and you will be redirected back to the Pokémon GO app.
Done! You will get your Progress back.
This is the easiest way to fix Pokemon Go Account Reset Bug and get your Progress back. Comment below If anyone tries this on Android and get their accounts back.