Looks like there's an issue with roulette. Once I place any bet down, the wheel spins (or I get locked out until others finish). Craps allows me to make multiple bets, so I don't know what's going on here.
There is a maximum amount allowed to bet in total, unless you are maxing it with one bet or multiple, the max is 2000 chips in normal lobby.
2000 on a single number, or 100 each on 20 different numbers etc.
JRSC01 is correct. But also if you are a new player, your max bet limited until you play for a little while. So while it is 2000 for most, it will be lower for new players.