Hello,
The issue was reported directly to the support team, and we are waiting for a fix.
We can't help much more for the moment :/.
EDIT : you can't play, or your subscription is still active, and you can't subscribe more time ?
If I'm not mistaken...
This game forces you to get a character out of the initial leveling zone, so level 4 on the free to play server before you can actually subscribe on the p2p server.
So that could be your issue.
By the way...this is one of the silliest things ever my.com. Please remove it.