1. Your card is not locked, you can use all the features that require your activation.
2. For the future for working with new solutions phones Repair IMEI / Patch CERT, you need to have a credit account. This solution is free.
If you need read codes via server, unlock tmb, unlock via server, it will already cost a certain number of credits, depending on the model.
3. About your phone SM-G965F. For now this new security is not supported, we working on solution, just solution will be ready - we will release new version of software.