Is there something wrong with the connection/sync to lemmy.world?

I would be about just to cross post mine to lemmy.world.

But I saw a concern:

https://lemmy.world/c/music EXISTS and DISPLAYS.

https://poptalk.scrubbles.tech/c/[email protected] is NOT displayed.

https://lemmy.world/c/[email protected] is DISPLAYED and WELL FUNCTIONING.

On the other communities with the same manner:

https://lemmy.ml/c/music EXISTS and DISPLAYS.

https://poptalk.scrubbles.tech/c/[email protected] is DISPLAYED and WELL FUNCTIONING.

https://beehaw.org/c/music EXISTS and DISPLAYS.

https://poptalk.scrubbles.tech/c/[email protected] is DISPLAYED and WELL FUNCTIONING.

Despite first I checked:

lemmy.world is one of poptalk.scrubbles.tech linked instances according to https://poptalk.scrubbles.tech/instances

poptalk.scrubbles.tech is one of lemmy.world linked instances according to https://lemmy.world/instances

I hope this is a somewhat concern.

End here.

---

---

Out of topic: my cross posts seem not linked to each other as if they are all duplicated separated posts, unlike what I see on cross-posts anyways. Maybe I am wrong on how to cross post. I just want to cross post so I could gather more different info from other instances.