I received email from them.
but not sure is them or not..
cause is not official email.
Proof:
https://ibb.co/2ZhLVMLDo they have a telegram channel or official social media account, if they have then contact them directly there, they seems to have a valid requirements that they are requesting, if you can provide that, do provide it, some exchanges do ask that kind of verification.
This is the first time I read about that exchange please update us on the development I am willing to support the flag.