No realms are currently available

Hello, I have not been able to log in, keep getting 'no realms are currently available WOW51900309. Have reinstalled, totally closed bnet app and relaunched, still the same.

Are the servers even up or is there something I can do?

Edit: So figured out eventually that one needs to log in to BNET account page and create a PTR account. Would have been useful if that info was made available.

When copying characters, it only copied 1/3 of my 85s.