OP, I also tried accessing the website but it's not accessable I also checked for review but can't find anything about them just as Solano has said are you sure you are posting the right website? If you are sure of it probably they must have rug pulled.
I was wondering because  that website looks strange to me. I do not think they are real.. If may ask, how did you get to know about the exchange? Was it based on referal online or somebody told you about the exchange because the exchange seems no ot real..

Going by all the requirements as requested by the exchange, I really do not think they are genuine. What stops them from taking those taxes from your trade rather than telling you to pay extra money before you could withdraw and how does that sounds to you?  No genuine exchange request anything from their members aside from KYC. I think you you lost your assets mate to scammers. They are gone with it.

Do well to make enquiries if you do not have idea on how to go about such engagements as it relates to exchange. You are now registered here and I believe you can be able to scale through successfully here to learn more about everything as it relates to crypto and Bitcoin..