Co-founder @bountycaster (bountycaster.xyz). Co-producer @ethereumfilm. Previously co-founder of Scalar Capital and product at Coinbase

Your group settings are correct.

OpenSea API may or may not return the ownership of the token depending if its visible on users wallet or hidden. Some collections are unfortunately hidden by default so we are not able to verify.

Update: if you're running into an issue joining the Bountycaster Pro group direct chat after subscribing to our @hypersub, please make sure the Bountycaster Pro NFT is visible on your OpenSea profile since unfortunately otherwise Warpcast isn't able to verify this info

Links:
Hypersub: https://www.hypersub.xyz/s/bountycaster-pro-elw06fv0rxts
Group DC: https://warpcast.com/~/group/mMpMZpT5rQMDbgduN_BoJg
OpenSea: https://opensea.io/collection/bountycaster-pro

After unhidden, it would be better to wait a while so that Warpcast can detect the NFT.