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 are out of business, why would they maintain any update and what would they have to inform us about? About their daily activities from real life?
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.
There is not much room for doubts and any conspiracy theories here, they did not calculate everything well, and it was obviously not the investor's primary concern that the service succeeded.
No room for extra drama here, they can probably lock this topic.