Is there any other way?

[Poison elf]

Not really sure what you are trying to get at.
I don't know of any other methods to get in the game but by using your log in and password, this is what identifies you and your character.

If you are having troubles just getting in, I would call support, that's why they are there.

If you just did the recent DL, perhaps reboot your computer.

Being a founder do you have a test account and that working?

Your questions here I view needs to be taken up with Disney tech support from what I can tell.