I belive that the first few weeks would be enough for a platform to observe the effects of an advertising campaign and whether it's working or not, and by working I don't mean that the platform should immediately start getting more money than they are spending on the campaign, but if they see at least some growth coming from that source, they can evaluate whether it's worth running it further or not.
Extending a campaign is only good if positive results are seen because those positive results will keep growing over time if more efforts are put into promoting the platform, and eventually, the campaign will start to become profitable because the platform will be earning more money than it has been spending on the advertising campaign.
not only an effort to run a long-term signature campaign or review. it must also be adjusted to improve service on the platform. providing a good and interesting experience for new users is very important. attractive bonus promos can be shared to retain customers who have tried playing for a few days. however, the challenge for new casinos is to attract new users who want to gamble.