Hi Mohd, Irfan Khan,
You will not be able to extend the Trail licenses beyond a month.
Please reach out to your project sales representative or CSM to get the license enabled in the org.
I have the same experience, just reach out to your project sales representative
have a nice day
You can also raise a shipping ticket using network portal ,if you are not yet assigned with customer success manager or don't have the sales representative and team will help you.