Yah, have to agree with this. If the poster is exploiting an edge, chances are that he isn't the only one. Even if he is not part of a group, it might look like he is part of a group. Unfortunately, Betnow can't reasonable share their evidence; it might seem like they should but they shouldn't. Because any evidence they share gives us more information about how to circumvent the systems they have in place.
I can only say that I have had good experiences with BetNow, though only recently started playing there again, so maybe they won't be as willing to pay out a winning account as they used to be.
I would say that if you are exploiting an information edge, such as past posting live bets, you need to accept that you're going to lose funds and just bake it into your expected expenses as a cost of doing business. Is that fair? Probably not, but neither is past posting a sportsbook's lines that they mainly offer as a courtesy (live betting is not a big moneymaker for them after accounting for all the costs to maintain it). Easy come, easy go.