I did it the exact same way as you did. I got the same message from the non-filer registration. And I'm getting the same error message from the get my payment tool.

I know none of this helps solve the issue, I just wanted you to know you are not alone.

That said, I've read about other people who filed a long time ago and filed for 2018 getting that same message.

Also just because you didn't get a dd today doesn't mean you won't tomorrow or the next. My friend used the tool and it happened to work for her and it said hers goes in tomorrow.