The GPL license allows you to make changes to the code. It will only apply conditions when trying to redistribute the code to others.
I've created a post that tackles a very related issue here.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.
April 20, 2021: Q2A 1.8.6 released!