Yea Primal simplifies things because they have their own integrated wallet and they use the same wallet for sending and receiving. In the screen you have there from Damus, it is looking for a Nostr Wallet Connect (NWC) string to authorize Damus to send payments using your external NWC wallet. Alby and Mutiny both have NWC support. The connection string will begin with nostr+walletconnect:// followed by the rest of the connection string you generate. It has to be that format for that particular wallet setting.