I have Freelance plus but I am not able to activate my SDL studio on the desktop somehow. It says activation failed. No licenses are currently available for the specified activation code. What is wrong?

I have Freelance plus but I am not able to activate my SDL studio on the desktop somehow. It says activation failed. No licenses are currently available for the specified activation code. What is wrong?
Ganerdene Gantumur We will be pleased to help you with this problem so have logged a support case on your behalf. You will be contacted at the email address used for this Community. Support Case Id : 00659955 .
Ganerdene Gantumur We will be pleased to help you with this problem so have logged a support case on your behalf. You will be contacted at the email address used for this Community. Support Case Id : 00659955 .