Looks like strfry’s default configuration doesn’t accept protected events. You might need to ask the strfry experts what configuration needs to be changed to allow them.
Discussion
unfortunately those that PR'd this protected event protection into strfry did not think to make it optional. if you want you can patch it to the previous behavior of accepting them. I have a fork where I reverted it. https://github.com/jeremyd/strfry
Learning a lot right now.. strfry implements NIP-70 but not NIP-42. There is some recent work for NIP-42:
https://github.com/hoytech/strfry/pull/156
So maybe that will be merged soon.
nostr:npub1hqlxlq57nvlq70ugmsmu9y5lmyc5k2lh5w7y85j7dgsr5u7zwavq5agspw accepts local protected events because nostr:npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6 fixed it in the 0.8.2 release:
https://github.com/greenart7c3/Citrine/commit/973be4290e3af0aaaf2a46b509c8ecc65bddbcc3
