I log in today in a different outfit and tons out of my inventory are missing. Tried logging out and back in several times, no change.

There is no customer support contact.

Half my stuff is unequipped and half the stacks in my inventory are missing some or all (including everything from 190 cheese, 55-75 of eaach firework, half my costumes have been reduced by anywhere from 32-80, and much more.

if you go to the top of the discussions tab there's contact an admin/mod

There is a staff contact so you can contact a staff and appeal bans etc

also there is a staff FAQ so you can ask questions here in future