Ataman Ataman M2R bullpup fires with safety engaged. Any help out there?

Not familiar with that particular gun, but...

In most cases, a misadjusted trigger will allow firing with the safety on, or even lock it with the safety off.
Get a manual (Google). Read how to adjust the trigger. Try to go back to its original setting if you can, but in any case, follow the manual,
See page 9.

I found one YouTube video, but there were no subtitles, and not in English ! But, you may give that a try, just look for trigger "adjustment" videos.

MIke