iCloud Mess

Hi -

I couldn't see the up-to-date contents of my iCloud drive on my iPad, so I signed out and attempted to sign back in. I correctly entered my apple ID and password, but, after saying "verifying" for a while, it prompted me for a 6-character passcode, but refused BOTH the verification code it sent me earlier and my password. So I cannot re-login to my iPad's iCloud.

To login HERE to this forum, I had to have the system send me a NEW verification/authentication code. SO I thought maybe that one would work on the iPad, but it doesn't. ANd there is no place on the iPad passcode prompt to send a new code.

Does anyone know what I'm doing wrong or not doing?

Thanks.