Outlook for iOS stopped synchronizing mail from one of my gmail accounts. Tried "Reset Account" and "Remove account" without success - "Updating emails . . ." message on an otherwise blank screen continued for 10 hours. I tried deleting the Outlook app and reinstalling. When I try to add this specific gmail account through "Add Account," I enter the email address, password, two-factor authentication and then "Unable to log in Please contact support for assistance." pops up.
This is a personal gmail account. I have no issues when adding another personal gmail account. I have cleared Safari cache, restarted the iphone between deleting Outlook for IOS and reinstalling. I revoked permissions to Microsoft from my google account, prompting me to resign in when I used Outlook Classic on my desktop.
The account syncs fine with the iphone mail app. It synced fine when I installed the google gmail iphone app. It works fine in Outlook Classic desktop. Just this specific gmail account and Outlook for iOS.
Any help appreciated.