Losarima, be very careful! This email isn't from the real BitMart exchange, no matter what it says. Take a good look at where it's coming from - that domain is 100% fake. This is probably some phishing scam tryna steal your money, and it has nothin' to do with the actual BitMart and don't go clicking on anything! Just delete it.
It's not a phishing scam, read what OP has said.
He went to the website, tried to withdraw and the got his account frozen, how could some phishing scammers know about that?
What really happened is that OP never went to the real website, he probably has fallen for a scam advert, a ponzi or maybe even the same romantic scam on Instagram, deposited money on this fake website, saw them increasing by the day, and decided to withdraw, that's when the scammer demanded more money.
So no, right now OP has no money whatsoever, just some shiny numbers on some website.
That bitmartcn domain reminds me of the series of bitmartch scams, I see the org domain is still up.
After appraisal by the Ministry of Justice of the exchange, you are required to pay 100% of the account assets for verification to unfreeze the account (74089.31USDT*100%=74089.31USDT).
And honestly, you though even for a second this is real?
Not that is going to help you in any case but it might help others from falling for this scam, how did it start in the fist place, I mean why did you deposit on this website, and second, how much was your initial deposit?