On Damus, I can’t see the zap button on your profile. And on Primal I see it, but I can’t zap you!

Usually under settings on profile edit, you have an option to add a wallet with an LN address, for example name@blink.sv from nostr:npub13ljnkd633c7maxatymv3y2fqq8vt3qk7j3tt0vytv90eztwgha9qmfcfhw