Hi KingKickass,
We have taken a look into the issue for you and have unlinked your Steam profile. What you need to do now is go to the ZARP VIP > Booster Pack page and click the button to Sign In with Steam. You must make sure you sign into the same Steam profile you use to play on the ZARP servers. After re-linking your account all you need to do is reconnect to the server.
Thanks for supporting ZARP!