I think the important part there (from your earlier screenshot of the notification pop-up) is that the cloud connection is unavailable. My guess would be that is the connection to HE services, not necessarily the cloud (Internet) in general, but others will be able to confirm that.
Are you 100% sure you have connectivity from the hub to the Internet more generally? If so, maybe to rule out any gremlins, and if it is ok with you, what if you rebooted the hub?
Ok. Otherwise, unless someone else has any suggestions it might be one for HE support to follow up... But let's wait and see if the reboot does the trick.
Excellent, must have just been a temporary glitch...
Re your mesh delays.... I have noticed that in the past at times as well, but can't remember ever really following through on any fix for it, though I may have posted about it some time ago. There may have been some progress made on it since and I have not noticed the commentary.... I don't tend to notice any effect that impacts my day-to-day, so am not that worried if it is happening.