I guess lack of funding's maybe the key factor on why they decide to immediately stop their marketing since its like they are rushing everything since they don't have much resources to spend for marketing that's why they end up like that. But if they can able to at least follow what those successful do and maintain their consistency to place their banner ads by help of their signature campaign then they do lots of giveaways and tournaments with attractive rewards then maybe situation might became different and they can able to hit those their targets.
I do not have much insight into the reason the campaign stopped, but if they were rushing things to get the gamblers on the site, then it was a bad approach, especially when you do not have funds to sustain your marketing strategies.
Anyways, it is not the end of the world. Even if Betkin does not restart the campaign but focuses on doing the honest business, they will still grow. It may take time but good projects and businesses grow in the long term even without extensive marketing.