My sign in Screen is blacked out

I cannot see the form fields for the sign in screen. I all turns black when i try to log in.
This is a new issue.

Can you record a video of the problem?

@ThinhDinh @ToOFa_Apps Hello!
The same problem started a couple of days ago.
In the browser on the computer I found a workaround, but on phones it will not work.
I hope the video will help to solve the problem sooner as I get a lot of negative messages from my users =(