Hello,
IMEI repair features are free for Samsung Tool Pro license users.
But starting from 37 version of Samsung tool to repair IMEI and some other operations with the latest phone models you need to have an account with credits on it, to can authorize on the server. The number of credits in the account does not matter. It’s free, credits will not be charged.
Without this, you won't be able to use the new solution.
Here you can read some information about Z3X credits (using rules, details, reseller list, etc)
