Looks like there's something to worry about

Update from OP, Zeusmex is out of business. Unfortunately, they did not last long, although they seemed promising.
I assume that the signature campaign is over.
This was so sudden, could it be that they invested too much in the project and the investor needed to get that capital back? Well, I think the chances of the exchange giving us an update on this are very slim.
They could retreat and go after other investors or angel investors, since the project has a good proposal, someone would certainly embrace it, but this farewell to the market raised suspicions.