Same, I registered a account months ago due to some of their airdropped tokens which received but never used/also no value. Later got these weird log in notifications every once in a blue moon. Once I got the 3rd weird log in though, ceased contact with the exchange and changed my password on other exchanges. Best to just use a password generator, cant be got if you never have the same password. Which is the technique currently employed for security purposes, so if you didn't lose much, now you know.
If you lost big, sad but lesson learned. If they aren't answering you with real replies, then they probably don't care, nor do they have a reputation to uphold.
oh and don't try going to one of the "asset recovery sites" 105% scam
https://www.trustpilot.com/review/coinsbit.io#:~:text=These%20people%20are%20criminals%20and,this%20ponzi%20scheme%20scam%20exchange.
as there are reviews "claiming" to have received payment but are paid reviews.
oh and sorry for your loss.