It seems like there might be an issue with my server. I don’t want to bother others with requests anymore, so I guess the only option is to create a personal NWC custodial wallet and test sending from there. It really doesn't seem like anything is easy. Still, thanks a lot.
Discussion
If you try and fix it later feel free to ask for some zap tests again
I think I’ve fixed it now. I’d really appreciate it if you could test it out when you have some time! nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qghwaehxw309aex2mrp0yh8qunfd4skctnwv46z7qgawaehxw309ahx7um5wghxy6t5vdhkjmn9wgh8xmmrd9skctcppemhxue69uhkummn9ekx7mp0qyt8wumn8ghj7un9d3shjtnddaehgu3wwp6kytcprfmhxue69uhhq7tjv9kkjepwve5kzar2v9nzucm0d5hsz9nhwden5te0wfjkccte9e3k76twdaeju6t09uqzpzhx8hlrpt5dqapv075r2kc0smhxrvc8d2rz5w50ya3nurejnslvy38q8q