Apologies for the delay in response here, I’m not usually checking my direct pings.
I’m fairly sure that plugin just does syntax highlighting and the actual language server support comes from UEFN itself. Have you tried launching VSC via the “Verse” button in UEFN itself?
The plugin contains the language server and does not require UEFN to be open, though opening VS Code from UEFN does help with setting up some other features and making sure that the digests written out (which the language server uses) are up-to-date.
@DarkAbbot, could you check if the VS Code output tab has a VerseExt category, and if so, please paste the output here? If it doesn’t, that means that the Verse extension is not initializing correctly somehow - can you delete the entire extension folder and re-install it using the .vsix file?