Can I sell my NFTs on OpenSea?

Yes! The marketplaces for NinjaFT NFTs are and OpenSea.

Can I use another wallet?

Trust Wallet is the best wallet for Binance Smart Chain (BNB Chain) NFTs. (BEP-721) If you transfer your NFT to another wallet, you should import that wallet into Trust Wallet.

My wallet won't connect.

On Android, go to Settings > Apps > Default apps and remove the default apps for Trust Wallet, and NinjaFT.