Are you opening up Adobe products such as Acrobat and getting a message that activation failed?
The easy fix is to log out of Adobe Creative Cloud and log back in.
First, open Adobe Creative Cloud and click on the Account icon on the top right. Then choose to sign out.
Then sign in with your OSU email address and password. More information about signing in (including screenshots) is at https://ocio.osu.edu/KB06205
If you continue to run into problems, please contact con-it@osu.edu and let us know. There are some other steps to try at https://helpx.adobe.com/enterprise/kb/resolve-trial-and-license-expired-errors.html, but some of them are a bit complex and may require our assistance.