Hmm. That sounds like what you have to do for two factor authentication.
My account completely closed, then I had to confirm it

Why is this happening?
I tried logging in multiple times now. Finally, I had to give a six digit number.
Then it let me in.
Did you hack or did anything similar?

Why is this happening?
I tried logging in multiple times now. Finally, I had to give a six digit number.
Then it let me in.
Website or app?
The number thing is if the site thinks there have been suspicious login attempts. Though I believe that only should show if you enabled it settings.
This was on the website with a desktop. I don't remember now what happened last night. So, I will close this account and try to recover it. I will screenshot it if it asks for a six digit number (again).
Why is this happening?
I tried logging in multiple times now. Finally, I had to give a six digit number.
Then it let me in.