Well, I got a reply... with Olivier's permission I'm posting it below.
"Hi Hisham,
Sorry for the late reply. Feelin had some positive feedback at the time (10 years ago was it ?). I worked with 3 other developer to port it to MorphOS, AOS4 and AROS. A designer contributed very nice skins that can be chosen from the installer. I was offered a GoldEd licence and an PPC Amiga, which was very nice. Unfortunately I had to quit its development because I couldn't afford to maintain it anymore. That's too bad because the last update broke the preference system :-/
I was wondering about putting it on GitHub, because I still have the source history in lzx archives.
I hope you'll enjoy it. Also try the previous version, it might contains a better working preference system.
Best regards,
Olivier"