The settings page says "Warning: If you deselect Undetermined, you will not see most content.", however there is no option for this. I can't comment on other communities, is this related?
I'm noticing that when I view some communities in other instances from within the feddit.uk instance, it says there is 0 comments on every post, or I can't see posts at all. When I view them from an account I made on lemmy.world, I can see everything. I can only assume that this is related to the 'Undetermined' language option. Tom is this something you can look into please? Under Settings there is a Languages box (different to interface language), but we can only select English rather than 'Undetermined'.
If you Ctrl+ Click English and Unspecified, it will select both. I've personally just clicked on the languages box, pressed Ctrl + A to select them all, so I can see posts in all languages.
I had an issue at first where I accidentally selected only Undetermined and some Cyrillic language, so when I posted from jerboa (which I guess automatically selects the language if you have more than Unspecified set), it was marked as that language.
I've been able to post on some communities external to feddit.uk but not others. The Apple community on lemmy.world is one I haven't been able to use. When I hit post on my comment, it hangs. I'm also noticing some communities are totally blank or comments are missing when I view them from within the feddit.uk instance. I'm thinking there's some federation issues going on.