MC 1.19.2
FAPI 0.60.0
ConnectibleChains 2.1.3
Charm 4.2.2

According to the notes of version 2.1.2 there should be support for Charm's gold chain, but the chain is not linkable and doesn't have a tooltip.

I didn't see anything relevant in the logs, but here it is just in case: https://gist.github.com/SplendidAlakey/cd8223b4b3db1c47d236a55e6eafa021

that is weird. let me check

I think I have found the problem. Will probably fixed next version.
Can't check it though since for some reason charm doesn't want to run in my developer environment.

I could check it if you upload the build here.