Changenow.io is a scam exchange. They are selectively scamming their users. There are no problems with low deposit amounts, however, if the coins deposited are substantial, they will hit you with KYC and pretend to be complying with AML laws. Now, this exchange claims to be anonymous like Changelly, Shapeshift, etc? You don't need to create an account and all, so why do they all of a sudden need users to send them personal identifying documents, and demanding video calls? You can read more here about how they stole 11 bitcoin from a depositor:
https://bitcointalk.org/index.php?topic=4619534.msg43207255#msg43207255
Why are they asking this only from large deposit amount?. Why are they not asking for KYC before accepting deposits? At least make it clear to depositors their assets could be held hostage? I also find it weird how deceptively similar changenow .io looks like changelly. It isn't normal. It is clearly designed to dupe depositors into thinking it is changelly, the name too - changeNow, changelly - both starting with C and having change in the name. Users should be careful depositing here, these are Russian scammers, taking your deposits and hoping you refuse KYC so that they keep your funds. Because they know that no sane person, will send criminals their ID