Changelly said we can exchange btc no matter the amount without KYC
However they asked for KYC for this guy
So yes changelly is a scam, they must be arrested
The matter is that the author's transaction wasn't processed on Changelly. We have no access to any data concerning the user's transaction.
Too bad for your program it is now marked as a dangerous website, I tried to access it but all search engine and anti virus have marked your website as a dangerous and untrusted website, not good for a transaction based website, you will have a hard time fixing this.