If you’re having trouble signing into Pokémon GO with your Gmail account, there are a few steps you can take to resolve the issue.
First, try restarting your device and then launching the Pokémon GO app to see if the problem is resolved.
If the issue persists, it may be due to a network issue or incompatibility with your device. You can try the following steps to resolve the issue:
Check your internet connection. Make sure you have a strong connection and can access other websites.
Update the app and/or your device to the latest version.
If possible, try signing into the app with a different Google account.
Check the device’s time and date settings. Make sure they are accurate.
Try signing into the iPhone version of the app.
Try signing out of the app and then signing back in.
If the issue persists after following all of the steps above, you can contact Niantic Support for further assistance. They may be able to investigate the issue further and suggest other options. You can reach them through their website or their in-game support page:
Website: https://support.pokemongo.nianticlabs.com
In-Game: You can access Niantic Support from within the Pokémon Go app by tapping the PokéBall at the bottom of the screen > Settings > Help & Support.
If you're still having trouble signing in with your Gmail account, please don't hesitate to reach out to Niantic Support for further assistance. Good luck!