Joplin Cloud so rarely goes down. Then when it does, notes not syncing takes me by surprise.
But in the world of cloud, servers go down. In May, they did for Joplin Cloud.
When something internet-connected breaks, I check its status page. To find out if the problem is local, and I need to get my hands dirty.
I found that Joplin Cloud did not have a status page yet. So I made one, using another very useful open-source tool.
I'm not affiliated. I just like the tool and the first-party sync service. Hope this helps others who do too!