Thank you again @OttoKerner for all your help so far! Really appreciate it!
I did some digging in the logs and it looks like my issue was this one: Agents not working
I followed the solution there and added my private IP address to the List of IP addresses and networks that are allowed without auth.
The agents started working and my subtitles show up as well! However, when the agent started pulling all the metadata, it started pulling info in dansk as opposed to english. Any idea how I can get Plex to clear and pull all the metadata again, this time in the correct language?