Changenow acts legit for small swaps but freezes big ones, leaving people stuck.
scam
After talking to them, I realized that they are harassing crypto users and holding their funds. I am surprised that crypto users do not really try to understand the usage of this exchange before using it, that too with such a large amount of funds. There are already many complaints against changenow in this forum and they have not even tried to resolve those complaints and this shows that their intentions are bad.
Anyway, the OP is still offline, let him come online and see if there is any new update.
Even after users submit all requested KYC/AML documentation, support frequently stops responding and funds are not released, sometimes for months