All bots offline at the same time

So, I’m wondering, how is it possible for all bots to go offline at the same moment.
Basically, I have more bots hosted on glitch, and there’s also another bot which is hosted on glitch, but not by me and it didn’t go offline.

Why does that happen?

Another problem is that they are still offline for some time sometimes even though I’m using Freshping and Uptime Robot …
(Python and JS bots)

Could be related to an outage right now: