For now, there is nothing we can do is just wait until they will come back or the worst part is they will never pay their user's fund. I have seen cases the same on this and unfortunately, it is always a scam result which is they are going to pay.
Just keep contacting them and probably they will respond soon.
To keep contacting the website representative may not bring the result if the website has been operating with players there in illegitimate way and scamming them in the beginning. I don't know how good they are but they behave in bad way not giving information adequate for hodler to withdraw coins, coin exchange did such to investors before closing business.