I see you had the same issue I am having this year.  I have a 2020 return that needs to be electronically filed. I am getting the fast patch license error.  Based on me112233's previous post I guess it means that I need to purchase 2021 program.   I have been using Proseries for a very long time I think they were influenced by another company that use to hold you hostage to get me to renew my bookkeeping software program or I could not use it the following year.    

I am still waiting for a response from proseries, I know I have an option to paper file, but I paid for electronic when I purchased the program.

This is not a business-friendly policy.  It might be time to move on