Their program page seems to be up and running. Maybe they just have to review the sales you sent them. Most affiliate programs won't pay you if the accounts you referred are cancelled during the money back period etc.
What do you mean they removed your posts on this forum?.. How is that even possible?
Also, as stated above, make sure you're getting legitimate sales. If you send them signups that turn out to be fraud or cancel within 30 days (usually, but varies from host to host) then you will not get commissions for them.
You guys think they are scam? Just let users refer another users to them then remove all of their effort?
I wouldn't be quick to point them out as a scam. As HostLeet mentioned, I'd ensure that legitimate sales are being made. I'd also check and see if they have a minimal cap for sales before payout. Give them time to explain what happened. If you end up getting burned out of this then at least the next time you do this you'll do a little more background work on the companies you associate yourself with. Hope it works out for you though.