How did they contact you? In my opinion it's always very suspicious if the broker contacts you first.
And yes, if they try to force you to upload more and more money, it's even more fishy.
I'm sure he has in the past, bur not very often, since there are many scams on FPA
I was contacted by another company (they were very aggressive, called me a number of times) and I got transferred to the broker when I said I was prepared to listen to their offer. My broker said that they bought that service so they could concentrate on trading.