You need to wager $5000 to reach the Rank 3 (Explorer) on Airbet.
You can find more information about how their rank system works from this page:
https://airbet.io/rank

I don’t mind the 36x wagering requirement but I agree with you about the rank rank requirement as it excludes new users. Promotions and contests are supposed to help attract new customers. But you know the saying: "their casino, their rules" and we have to comply with those rules.