When I open acrobat I am prompted to purchase or start a trial and cannot use it anymore. I have been using the free version. I uninstalled and reinstalled it. Still the same problem. Why is the free version no longer free?
Hope you are doing well and sorry for the trouble. As described, When you open Acrobat you get prompted to purchase or start a trial and cannot use it anymore.
Would you mind sharing the screenshot of the error message for a better understanding?
Also, make sure you are using Adobe Acrobat Reader DC application (Freeware) and not Adobe Acrobat DC (Paid Subscription), please logout of the application and reboot the computer once and re-login to Adobe Acrobat Reader DC application and check if that helps.
Let us know if experience any trouble and need more help