There is an issue going over what happened.

https://github.com/h4h13/paisa-app/issues/2

I’m gonna be honest Paisa was under agpl 3 and it explicitly states you can’t just change the license.

If my non-lawyer interpration is correct.

All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.

But then again maybe I am misunderstanding that