Yeah I think I'll have to contact them. In my treasure chest weapons page it shows cannonball, chain, grape...chain and grape both show active and have full ammo. When I get on the cannon the circles go: cannonball, blank (showing chain should be second but it's empty) then grape with full ammo. Weirdness.
BTW I just upgraded to lvl 7 and it's still not working.
***EDIT***
Well guess what! I got an email back from them telling me to update my graphics drivers!!! HAHAHAA it's gonna be just like Toontown...anything goes wrong, it's your drivers!!! If it were my drivers, I would think I'd have issues with more than one weapon, don'tcha think?!?!
I'm now up to lvl 8 cannon and it's still not working. Also got a message to train a new shot which I can't get to work, even though I bought the ammo. Is anyone else at this lvl having this issue? Or anyone higher who can tell me when it WILL unlock?