I am not going to comment on whether this is a scam project or not as I don't have enough information about it. However, I want to comment on this point:
they claim to have agreed to list on Mexc by 10th May, but no info from Mexc.
This is not correct. MEXC announced on one of their tweet they will list STN token soon although they didn't provide an exact date:
MEXC is thrilled to announce that $STN will be listing soon!
...
As I said, I just wanted to correct the above point and not saying the project is legit or anything like that. DYOR before investing!
yeah i saw that today, but have u gone through the response to that tweet Back in april 10th, some peeps some called it scam there. Also Red Falcon had Bitmart, and 5 other excachange tweet about a listing, it was just a ruse.
also please check this question by someone in the group and watch their answer if will atten to it at all,
https://t.me/STNSBGROUP/130238