I chose cataphract but I didn’t do the job quest, I didn’t realize that I could be barbarian (2) and still advance to Squire. Is there a way to change this? When I try to submit a ticket it tells me to authenticate my steam account but idk what they want me to do. Please help!
Nope. Once you choose a class you’re locked into it.
If I reset skill and stats will it reset my class ranks though? I really want to be barbarian (2), I just spent 500k on a 2h sword. 
No it doesn’t reset your class rank.