Hello!

Great question. Essentially what is happening is that GDPR needs to be accepted in order for you to access your account. You can only accept the GDPR on a new character, since the old character has already has not accepted it. If you follow the steps outlined above, it will allow you to accept the GDPR, which will enable you to go back to the your old server and access your old character again.

Hope that helps!

~Jib