Guild Wars 2

I recently purchased 2 x digital Guild Wars 2 accounts for my friend and myself to play.

After 2 days of playing successfully together, and reaching level 12 my friend is now unable to access his account due to Error 122:4:5:170

Repeated logins give Error 21:6:3:2114
Server was unable to authenticate your gameplay privileges.

I’m still able to login with my own account and both game copies were purchased from the same place with the same credit card under the same name.

Ticket# 120914-000404

Not sure how to proceed as the account hasn’t been compromised.

error 122 means the account was fraudulently purchased by an unauthorised seller or similar to that(i got it too cause paypal reversed my payment without my knowledge)
so i bought a new serial key on the account im talking from, yesterday night they offered me a solution disable the serial key from the account im talking from and reissue a serial key for my error 122 account so solution is buy a new serial from an authorised seller (best is to buy from arenanet site) and ask them to apply it to your account with the error 122 now as for refunds about the old serial which was rendered useless your friend will have to speak with the ppl that selled it to him