I can get in game just fine. Or do you mean you can't load the whole thing?
If the latter, try this:
DOWNLOAD TEST SERVER ACCESS:
Please use the appropriate link below to download the launcher for
access to the Test Server. Use your existing Account ID and password
to log in:
For PC:
http://download.test.piratesonline.com/english/currentVersion/PotC-setup_TEST.exe
For Mac:
http://download.test.piratesonline.com/english/currentVersion/PotC-setup_TEST.dmg
If that doesn't work, I would suggest giving D a call.