We tried to do a last minute swap out to Bitcoin Connect but it didn't handle our flow as well so we made a few issues and might circle back later.
benthecarman (npub1u8l…turz) has some ideas around Nostr Wallet Connect Connect to make the pairing a bit easier on mobile phones. It's hard though. We've got browser extensions, web wallets, and native mobile apps. Hard to fit everything into a one button click integration. We had to do some weird callback url stuff with zapplepay to get it as seamless for us as possible.