I downloaded some Trackmania 2 car models, 3D and 2D. This is my first time ever succeeding to get my car models actually right, it took me a long while to get my car model into Trackmania 2 (Canyon, Stadium, Valley), I struggled so much I eventually gave up and I had left Trackmania for a little while, some time after, blah blah blah, I got back to Trackmania which is now, and I had finally succeeded in getting some car models into Trackmania.

Though, when I downloaded all my car models, something wasn't right, the problem was, I wasn't able to select any car models for Trackmania, I went to the profile section and I tried to click the "models" thing, but I wasn't able to, I clicked it again and again but I just couldn't access my models, I was very upset that I couldn't even get to select my models.

I also have another problem, I try to buy my Trackmania car models, but it ask me for my Validation code, you see, I used to have a email where all my Maniaplanet things would go, (Key, validation code, etc) Though, I never knew I had any maniaplanet things in there because I barely checked my email, some time after, I forgot my original email's password, I then created a new email which was succesfull, but I just couldn't get my Maniaplanet things into there...
I don't know my Validation code, or my Player Key, so, now, I can't select any car models or even buy them.
I really hope someone can answer my 2 questions, I really want to use my Trackmania car models very bad, and I don't want to fail and leave Maniaplanet for another time...
Thanks.