Even though I cannot substantiate this line of thought, I really feel it has something to do with the authorities. The closure was sudden considering that they rarely even started. Every business takes sometimes to become profitable and a business of this magnitude should have envisaged some challenges at the beginning if there were no external factors at play here. So my best guess is that they ran into problems with the authorities which might have made the investors incur some losses in a business that is just getting started.
There is no conspiracy theory here. It’s just that our investor had financial difficulties, this is not related to the project, but due to family circumstances of our investor. Therefore, we spoke honestly about this and suspended work a few days ago.
For what it's worth, I hope the family of your investor is doing fine. This may or may not be true at all. For all we know, this could just be the easiest alibi they had in mind, but at least you didn't just vanish into thin air leaving users hanging and probably waiting for nothing.
Suffice it to say, however, that you leaving like this, less than a week after your announcement, sudden, and with too few and dubious details, would naturally make curious minds suspicious.
Yours is certainly one of the shortest-lived exchange in crypto history.