They don't answer support calls very reliably, sadly. I made a trading course and it features Polo exclusively. Thought I'd get in touch to ask for a possible promotion. Back then the Trollbox was still on. I was told by one of the mods there to get in touch via mail, which I did. But when he wrote that, I knew already, they wouldn't answer. This has been about 1 1/2 months ago.

I believe they have huge scaling issues. One of the reasons I'm not worried about my money. As long as they have enough money, but not enough workers, everything's fine. When they have less money, than they have work to pay, they go belly up.