The old lingq 3.0 “feed page” (i.e. Login - LingQ) still seems to exist. It is my understanding that that page has been replaced by the “library view” (Login - LingQ). That can be confusing to users who may have the feed page bookmarked since many of the functions on that page are no longer operational. I recommend that you have the old “/feed” route redirect to “/library” and remove the outdated views.