Since last week, visiting any (profile) page while not logged in (or in a browser private window) gets a page saying "Temporarily unavailable (Error 503)". Occasionally the profile page loads, but clicking any link in the page would still give Error 503. The problem doesn't happen while logged in or before last week. If this is a new anti-bot measure, then please inform users of "you can only login to see the website". The current behavior is confusing, especially when you share a page with som...