In this site, there is a question "Optional: What version of Q2A are you running?"
How was this configured? Plugin?
Administration center - Posting :
Look at this line:
Custom field for extra information on ask form.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask 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.