Hello David,
Of course, the problem was on our end. But we didn't get notified about it and therefore weren't able to fix it as fast as we usually do, because the monitoring service we were relying on suddenly shut down their service for us without even notifying us about that and despite the fact that the service had been paid for well ahead.
I'm writing this so that you understand that this is an exception, a pure coincidence, and not a rule. We didn't really expect such as treacherous act on their part. It was, figuratively, a knife stab in the back. After all, a monitoring service - especially a big name in the industry - is something you expect to be reliable 100% of time.