I click on Private messages and it takes me to The signature And infractions Centre, And when i click on Tennis Profile it takes me to My profile last location Send private Message E.T.C
You can still get onto usercp, you can find it at 'User CP' at the top left of the page to get onto it. You could also bookmark it too if you wanted to.
I'm in invisible mode. When you become a donator you have the option to go to invisible mode, which is essentially a mode where your online status is 'invisible' to other users. Only Globals + Admins can still see you online on this mode.