Do you get any error or just the progress bar that doesn't end?
nostr:nprofile1qqst4qyeqenw7zm0fwjsty68h6cnys5jre2xd8ngqpjv5a2j26s78fspzemhxue69uhhyetvv9ujucm0d9hx7uewd9hj75a0pev nostr:nprofile1qqsyvrp9u6p0mfur9dfdru3d853tx9mdjuhkphxuxgfwmryja7zsvhqpzamhxue69uhhv6t5daezumn0wd68yvfwvdhk6tcppemhxue69uhkummn9ekx7mp0qyghwumn8ghj7mn0wd68ytnhd9hx2tcewvzaw I think there are some issues with NWC zaps when using Tor. I'm assuming cloudflare is in the mix somewhere. Now that #Amethyst is fully Tor-enabled, this will come up more. I can't quite put my finger on the exact combo, but it goes right through when I start switching Tor off for some of the relays.
Discussion
Just neverending progress bar. An error only once, and that was definitely cloudflare. A lightning address on someone's site. Turning off Tor for money fixed that immediately.
Make sure to check if the money went out or not when that happens. Usually it goes out but the zapper service is not online or your public inbox relays are too busy.
I was getting no progress bar completion and no money out. Switched Tor off and it went through fast. I'll keep playing with it and see if it's a real repeatable thing or just coincidence.