Iris is merging with Snort, and I'm not sure which version is served now at iris.to and whether it is maintained. That might be the reason why your messages aren't visible on iris. Or it might be the relays problem.

Try snort.social, login there, go to profile, settings, relays - make sure you have a lot of relays, try adding some bigger ones like relay.damus.io, relay.nostr.band, nos.lol - use nostr.watch to find some. 

Then try posting on Primal - they might not have full support of many relays right now because they use their own middleware, so I hope that if you setup relays in Snort then Primal would post there and it would be better visible outside of it. 

I mostly use Snort on desktop, other good ones are coracle.social, nostrudel.ninja, satellite.earth 

 All write operations on Primal go directly to relays. Our caching middleware is strictly for read operations. 

 Does it read relays from kind:3 or kind:10002 ? If user has no relays - where does it write? 

 Only kind:3 for now but NIP65 support is on the way. 

 That's what I meant with "full support" - this new user has no relays in kind:3, and you're not reading from kind:10002 - so which relays are used when they post? Only your relay? Some default ones? 

 I'm not sure how it works, in that case posting just shouldn't work. @moysie should know more about how web app works. Maybe it reads relays from the extension if it's setted up there. 

 Thank you! 
What a great support from community. Even someone from primal team has come to this thread 😃 

 Primal does care, they're a great team!