Reviews can take some time, and they are likely back to continue after agreeing that this is a necessary platform to have a strong community that knows and promotes the use of their gambling services on their platform, especially with how the competition has increased in the crypto gambling space.
I don't think the evaluation of previous campaigns is what encouraged them to continue advertising here on the forum. Quite the opposite, because the campaign stopped a long time ago and most likely it was not as successful as expected or that it served its intended purpose considering that the casino was new and needed to be presented to the community as a good and reliable example. The more logical reason is the increased competition in the crypto-based gambling market, which made the platforms compete to get the largest number of users and that is why we see how the number of advertising campaigns has increased, especially the forum signature campaigns.