In fact, i can't figure out why all those contests ended suddenly. Maybe the team decided to stop them after reaching their promotion goals but those contests had been running for about a year or more. I don't expect them to be a failed strategy especially that the prize pools weren't that big amounts.
Actually, i only see graphic design contests which are not the same contest as the betting ones.
I really wish Roobet consider to resume them soon. Even tough i didn't ever win in any of them