Can't log in to opensubtitles from Jellyfin plugin

[jbendy]

OS: Windows Server 2016 x64 (VM on VMware ESXi 6.7)
Jellyfin version  10.8.10


Hi all,

I'm trying to get subtitles for the media on my Jellyfin VM. I read that there's an opensubtitles plugin, so I installed it in Jellyfin.
I've created an account on opensubtitles.org and .com, and linked the two accounts.

I've made sure the username, email address, and password are all exactly the same for both sites. I then created an API key for Jellyfin on opensubtitles.com.
When I try to sign in with my username and password in the opensubtitles plugin, I am given a pretty generic error, "Request failed - ServiceUnavailable".

There is a button to check the status of opensubtitles' API, and that indicates everything is working. The API key is listed as optional, but I tried signing in with my username, password, and key all together; still got the same error. Just in case I also tried the email address instead of username used on the opensubtitles sites, but that did not help.

Has anyone run into this? Maybe I'm missing a step? Any help would be appreciated.

Thank you for reading