2 is correct. But you should also be working with casinos that have a “no negative carry over” policy, so if you are in the red $3,000 at the end of October, you zero out and start from scratch in November. Make sure to check policies to which programs will make you keep digging out of the hole vs. zeros at the beginning of the month.
Another thing to consider-it sounds like the one or two players on the hot streak tagged to your account keep playing-they didn’t take the money and cash out. This is a good thing. Chances are they will continue to play, and their winning streak will end, evening things out again.
Are you advertising roulette specifically on your site? It may be a good idea to push slots or blackjack to even out your roulette players…