Scam.
Repeatedly asking for some additional thing(picture, document, paper, unicorn milk, star dust,…) and it's never enough. I'm starting to think they don't want any users.
I had less the 200$ on my account, didn't use it at all and they restrict it all the sudden. The reason is that they are fighting against "money washing" or something like that. Only thing that i'm washing is a laundry.
And then a million proofs. Over and over again. It's like they don't read anything you write and send and they just want to annoy you enough to give up of your money.
At the end i don't care at all. But just don't bather with them if you don't have to. They are worst then jealous boyfriend - questions on and on and always on your account so in every scenario you're ending paying!