My Samsung Galaxy S9 suddenly requested to reset password (see image) when I was trying to unlock it with my current password.
Same thing happened several months ago: I tried to unlock it, this strange message appeared, I entered the SAME password I had at the time, and then the password didn’t function any more (I could only open it with the fingerprint). As I forgot to only open with the fingerprint, I entered the password 10 times (in several days) and it blocked completely. I had to reset it and lost all data.
Now it happens again and I am afraid to do the same thing (enter the current password), as I expect the same behavior…