How to renewal license?

Every time I open MATLAB, I get a message on the command window that my license will expire in (x) days. I updated, reactivate and restarted the license, program, and computer respectively but the message still keeps popping up. I'm using MATLAB under a total academic headcount license. If there is a way to renew my license please let me know.

Answer 1

[Walter Roberson]

Total Academic Headcount (TAH) licenses are always managed by a license administrator rather than as individual licenses. Your license administrator needs to do the updating of licenses on the license server.

Answer 2

[alexander genkin]

Need to be signed in the app, upper right corner

Then: Ribbon, Resources, Help, Licensing