Yesterday (I know) I noticed that the Login to beta.apple.com is not possible. I click on "SIGN In" or "Sign Up" enter my credentials and get redirected to the start Page, where I can just click on "SIGN In" or "Sign Up" again. In the top-right corner, i can "Sign out". It seems to be a problem with my AppleID because if I do the same with the account of my wife it works. I tried it on my iPhone and on my Mac Mini with several Browsers.
Login to beta.apple.com not possible
Guess what? A reboot solved the issue. I have no idea why this would help. I tried it in Safari and Chrome, and it did not work for my account. My wife's accounts worked.
Hello, by reboot, do you mean reset? I have the same issue with an iPad mini 2 and it is driving me crazy