Please provide your hub model (C7, C8, etc.) and its platform version from Settings>Hub Details.
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C8 2.3.9
The last update totall messed up my hub. Devices gat added to apps, 5 apps stopped working. I had to delet the devices, re-paidand recreate and reconfigure those apps. This has never happened before. It's working now, i hope this is a one off problem or bug and that it does not suggest the beginnng of a pattern of update-caused instability.
If there are any logs that might have registered a problem, please tell me where to find them.