Quick Start sets up the embedded node. If you want to connect another wallet or your own node you should use Advanced Set-Up.

nostr:npub1xnf02f60r9v0e5kty33a404dm79zr7z2eepyrk5gsq3m7pwvsz2sazlpr5 Maybe that’s a button that could be clearer. Like, “Connect a Node or Wallet” or something.