They're not souvenirs and I did enter my username properly. Not even my souvenirs show up.. I don't know what's wrong

Have you attempted to try this on another computer, and/or use all caps in your username when you log on? I notice back when I was on my V3's a lot that when I put in my name not in caps into the login, that sometimes messed up my chances...and sometimes it's the computer acting up too, so check those things next.
Now if you tried these things the next question would be if you have debugged your V3...because if you have then you have disabled your ability to connect to tamatown using your V3 because of you debugging it.