Unfortunately, some feeds are at remote locations and may be difficult to access in a timely manner. I don't know if that's the case with this feed; hopefully it's just a minor technical glitch at the feed site. The fact that you can connect to it suggests that the Liveatc link to the feed site is still active but that maybe there's a problem with the radios at the site (radio turned off, volume too low, stuck on an inactive frequency, etc.) or some other site related issue.