I have a Motorola Moto E4 Plus. I am using Android version 7.1.1.

All my Google apps are broken. For instance, Gmail crashes at startup. Calendar shows me my schedule, but reports a "Sync error" when I try to refresh. Drive says "Synchronization error". Maps says "Can't connect to Maps. Try again in a few minutes". Non-Google apps are affected also. My web browser (SmartCookieWeb) crashes on startup. CalTopo crashes on startup.

If I go to Settings / Account / Google, I can see that there is a "Sync error" on my Google account. I see the message "Sync is currently experiencing problems. It will be back shortly."

I have a notice saying "Account action required". When I click on it, I get a message saying "Google Play services has stopped". If I choose "Open app again", I get the message "Google Play services keeps stopping".

I don't know what the problem is, but I think I caused it accidentally while trying to turn off two-factor authentication. I am on the local search and rescue team, and I have a Google account for the team. I set up my phone to get emails sent to my team account, but I absolutely do not want to use the phone for two-factor authentication for the team account. Nevertheless, in the middle of an emergency last week, while I was trying to work on a rescue map using my team Google account, Google insisted that I respond to a text message sent to this phone, which I didn't have with me. Epic fail, Google. Today, I tried to fix this problem by purging every mention of this phone from my team Google account. As far as I can tell, that fixed the team account two-factor authentication problem, but it somehow broke my phone.

I am not phone savvy. I want things simple.Does anyone have advice on how to make my phone work again?

-- EDIT --

I deleted my team account from my phone, thinking it was the problem. That didn't help. All Google apps continue to crash or fail as before.

 

Tube517, Thank you for the suggestion. Updating Android System WebView worked. It seems that I was unlucky enough to get signed out while WebView was broken, so apps which required me to be signed in didn't work, and I couldn't sign in because signing in requires WebView.