Here's the content rules https://openai.com/policies/ad-policies, specifically in gambling:

> Ads promoting products or services that involve wagering money on games of chance, skill, or uncertain outcomes are currently disallowed. This includes casino or betting promotions, online sports betting, lotteries, and poker or gaming platforms that offer cash prizes.

> Ads for casinos may be permitted only when promoting lodging, travel, or entertainment experiences where gambling is not the focus (e.g., a hotel stay at a casino resort). Digital games that do not involve real-money wagering or cash prizes may also be allowed.

Hmmmm, the "digital games" seems suspect