The site is not working right now & as I saw there are lots of users scammed. It's really bad.

Those are searching a legit exchange for instant swap their alt-coin, I can recommend them to use ChangeNOW platform.
Recently I used it & it really works very smoothly & almost instantly.
They have also lots of others feathers also & also have their native token NOW.
It's a coinmarketcap listed token. You can check out here their platform for more details: https://changenow.io/