The U.S.A. site may be functional, but it's dreadfully out of date. The site has offerings that have long since expired and contains stale news, e.g. additional New Year's flights.

TG should be much more attentive to its web site contents.

I have been able to access my account fine for the last couple of days now!

Looks like they might have fixed the bug!

I am able to log in and get the Welcome Mr. x.
After that I am trying to go to 'Manage my bookings and profile', it then asks me to login again. After I login again I am getting an error message which reads 'System error, please try again later'.
I have been getting this message now for over a week.