What is the new Account Center on Facebook?
Can I use Fb Login across multiple apps with one tap?
What is Two-Factor Authentication (2FA) on Fb Login?
Factsheet
Update: Disabled some Chrome extensions and Facebook web more stable and no logout/ins. Got Android app logged in the next day. Maybe 2FA codes were rejected through too many login attempts? All working normally now though.
The last few weeks Facebook on Chrome has locked up while loading pages every 5 or 10 minutes. It does respond eventually and seems to be normal until the next time. Today it locked up and then said "something went wrong" and logged me out completely (for the first time in years).
I tried logging in again and the "other device" confirmation did nothing, the WhatsApp, Google Authenticator and Backup Codes all failed. I did get back in eventually (I can't remember how, maybe one of the other device links still worked), but then it logged out on the Android app and I can't log back in because "you can't use this feature right now".
I looked at the activity log on web and it has multiple instances of "<name> has logged in to Facebook.com" and "<name> has logged out of Facebook.com" for days, all with my home IP address and browser. I don't know if it's a Facebook web glitch, a browser extension causing problems, or a virus on my PC.
Has anyone else had a similar problem and know why or how to fix it? Worrying that it was rejecting all of the authenticator codes, even backup codes or codes sent through WhatsApp.