Whenever I try to register the trainer manager, I don't think it is displaying properly. All I see are three white boxes, the bottom one says unregistered but I don't see what I'm supposed to do.
If you have your registration code, put your username in the top box and the registration code in the second box. The box that says "UNREGISTERED..." should change to "REGISTERED".
I did that at first but it didn't work. I recently changed my username but it turns out I needed to put my old username in to register it. It's done now.