was surprise seeing this. changelly is not a scam. they are 100% trusted, you can go ahead and buy from them if they have bitcoins to sell but if they don't you can try from other sites as well.
I don't know if you have read that they have the power to confiscated your coins if they deem it's dirty. And far as I as know they are requiring KYC now.
Or you can also read this thread,
https://bitcointalk.org/index.php?topic=4619534.0.
You can also read their terms here:
https://changelly.com/terms-of-useI dunno who that poster is but they're probably the Changelly CEO's brother in law.
What the T&Cs fail to mention is that they will keep your funds if they think you've 'failed' KYC.
There's enough about this on the Mondero subreddit.
Buying I'm sure works fine for most but I wouldn't use them to suck the smegma off my chop sock.