That activity can't be trusted because such things are done by the scam platforms only and the one that you're using is most probably a scam platform and nothing else. Try to cash out your money and tell them that why they aren't allowing you to withdraw the money while other platforms are allowing the users to withdraw their money without any such taxes.

A legit platform would never freeze someone's account unless they find illegal activity done by that account holder. In your case it's clear that they are tricking you to deposit more money so they can scam you even further. They already scammed you by holding your money on their platform and now they are trying to grab more money out of your pocket. Be careful my friend from such fraud platforms and in future go with the trusted platforms only.

Don't send them anything if your current amount is gone then let it go don't let them fool you and get more money from you. I'm really sorry for your loss and I hope that you'll learn a lesson from the loss because it's really unworthy to deposit funds into a platform which no one knows about. After checking the whois information of the site I found the site is just 118 days old and such new sites should never be trusted.

Here's the URL to know further details about that site: whois details of the site