Tapatalk access has been shut down since the big big BIG Juventuz outage of a few weeks ago. Marty disabled the PHP plug-in code, suspecting it was a security hole. He's tried to patch it a couple of times but it hasn't worked, and that's where it stands I believe.
That said, since then, these forums have gone down more often than some Tuz posters on Aguero. So the theory that preventing Tapatalk access is somehow improving the forums' uptime seems a bit dubious to say the least.