autoscan VS Kitana

Use Cloudbox/autoscan instead. Plex Autoscan is not maintained anymore, you can see the repository is archived.

If you use *arr to manage your downloads try setting up the "Connect" section of it with Plex and only scanning when you import/add new media to save on the periodic scans for no reason, or perhaps check out https://github.com/cloudbox/autoscan as I've heard good things about this as well.

You should now use this instead: https://github.com/Cloudbox/autoscan

This tool is designed to let sonarr/radarr directly communicate with tdarr, much like autoscan is able to communicate between sonarr/radarr and plex/emby/jellyfin.

The solution to have plex refresh the metadata after a bazarr subtitle add is to use autoscan. NOT plex_autoscan, but autoscan. This is the newer version. You also need autoscan-adapter, the critical piece of the puzzle. Autoscan by itself lets bazarr/sonarr/etc notify plex to update libraries. The autoscan-adapter helps autoscan be able to actually refresh plex metadata so the new subtitles from bazarr can be found. This is all actually very easy to implement using docker-compose. Refer to the docker-compose setup in the autoscan-adapter github.

I recommand using Autoscan. If you're using the *arr stack to download your medias, it can then automatically trigger a scan. The *arr stack can do this without autoscan for jellyfin, but the advantage of autoscan is that you can plug it to any of your other means of downloading medias by just calling its webhook

Look into Kitana.

The Plex-Trakt-Scrobbler does this. You'll need the Kitana Plex plugin web frontend to access Plex-Trakt-Scrobbler's UI.

the old plex trakt plugin still works for me, need to use https://github.com/pannal/Kitana to access the the old interface however.

There is also an addon for plex that gives you more control, plex trakt scrobbler. Sadly plex has mostly done away with addons (I think that is why the addon is mostly unmaintained) so I use kitana to manage addons. trakt-for-plex may also be useful.

You need Kitana to access your Plex plugins.

2) Pair it with Kitana to access the web gui.

With kitana 'https://github.com/pannal/Kitana' you can run manual push/pull syncs. Along with more control over other plex plugins.

It still works! You just can't get to plugin GUIs anymore through the Plex app. You can run Kitana (https://github.com/pannal/Kitana) for this though

Did you set the sync to run at a lower interval? Or maybe to not wait until the server is idle? You can also try a manual sync and check the messages see if it returns any errors. The only way to do that is through Kitana after Plex got rid of the plugin interfaces. I run my own public instance at https://kitana.bas.sh if you want to use it.