What client are you using?
Discussion
Damus
Unfortunately the geniuses at Apple banned note zaps on Damus, but if you can get onto the TestFlight it’s still possible.
Otherwise you can connect nostr:npub1getal6ykt05fsz5nqu4uld09nfj3y3qxmv8crys4aeut53unfvlqr80nfm wallet with nostr:npub1wxl6njlcgygduct7jkgzrvyvd9fylj4pqvll6p32h59wyetm5fxqjchcan and #zap that way.
Damus TestFlight:
nostr:npub1wxl6njlcgygduct7jkgzrvyvd9fylj4pqvll6p32h59wyetm5fxqjchcan setup instructions are here:
nostr:note1f72205grals33mhtt2f7e545fdlk64y3kejp0hpjaxkhldphvnsqfntg9h