Logged in, https://lemm.ee/c/ukpolitics is empty, saying “No Posts”. Logged out, I can see posts. I just registered.
P.S. What’s “Language” when submitting a post and why is “Undetermined” the only option?
Edit: Also I can’t reply to post comments. Can reply to the post itself. The “Post” button just doesn’t work
Make sure that your sorting is set correctly? If you set your default sort to “top day” in your account then your linked community will have no posts since none have been made in the last day. Unregistered default sort is “active” so that shows posts.