I follow the step to rename the file 'Studio.lic', to 'Studio_old.lic' but still cannot deactivate the licences.
What else can I try now?

I follow the step to rename the file 'Studio.lic', to 'Studio_old.lic' but still cannot deactivate the licences.
What else can I try now?
Yoojung Han We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : 00842098 .
Yoojung Han We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : 00842098 .