solved:

cancel all existing damus NWC sessions before adding ZapplePay!

thanks nostr:npub1u8lnhlw5usp3t9vmpz60ejpyt649z33hu82wc2hpv6m5xdqmuxhs46turz nostr:npub1aeh2zw4elewy5682lxc6xnlqzjnxksq303gwu2npfaxd49vmde6qcq4nwx nostr:note1ke8atf8dlu3e04ae73h4cc6waw9ammv88gg8xy9lngrzw7v6d22qvxk4d9