To understand the situation, we need logs. When you are again unable to log in through the fb, follow these steps:
Open Explorer, paste the line there:
(where USERNAME is indicated – enter the name of your computer)
The computer name can be viewed in the system properties.
We need a file that is highlighted in red in the screenshot https://prnt.sc/11iq6t2
You can send this file to technical support and report the ticket number here.