Man, I created an account here just to answer your post.
I was scammed by Payever too, and I'm just feeling dumb for not doin some search before.

My case was a little bit different, but get me mad as well.

I was contacted by them at UpWork (Wich is an platform for freelancer) to work at the HR, recruiting the leads that they sent. Actually, just sending them the link to book an call and talking the little as possible about the job position.
They offered to pay me 40$ for month, if I send the full leads (Wich is supposed to be 200 by week). First week I got blocked by LinkedIn (spam of course), the second week they gave me only 100 leads and on the third week, they send me 200 leads.
On the end of the month, they ask me to calculate how much I will receive, because they (apparently) doesn't have this exactly control of how much work I've made.
So, when I asked if I was supposed to receive the full week when they send me 100, they say that no, because I was supposed to make 200, not 100 (even this being their fault).

I just say ok, because a taught that I misunderstood the contract. But OK.

Send the calculate to them and they just react the message with an "👍🏻", after I send at the Upwork platform to receive the payment. The Upwork says that they have 14 days to think about and take an attitude, or the platform pays the fund (5$ less there taxes).

So Payever send me another amount of 200 leads on the Thursday almost 6pm Portugal time (Wich is like 7pm Germany time), and ask me to do everything on Friday. So I did like an maniac.

Well, 14 days has passed and I didn't receive anything, they just don't pay. When asked, they say "sorry, but the Upwork team is different, you need to contact them by there, here we are just the HR"

I mean like, wtf, I've worked like a crazy for one and a half month for 5$ (without the Upwork taxes).
Payever is the worst, scammers of hell.
Sorry, but I'm mad with this.
Hope you get some better work after this!