From my point of view in Connect, you have 2 posts. This one and this:
https://lemmy.world/post/2547524
Opening the link in a browser without logging in shows that you have 4 posts including this one. The 2 guinea pig posts don't show in connect. Both have votes so someone must've seen them.
It seems that the guinea pig community isn't visible from my end at all.
I'll try to search it from the instance that I use to force federation. Just a sec. I'm now subscribed....and there they are. I can now see all of your posts through connect.