Cloud connection unavailable says that the hub can’t get out to the internet, the other issues are a result of that fact. Personally I’d reset the network settings using the small reset button hidden in the bottom of the hub and see if that restores your ability to reach the internet.
Most devices use DNS as their internet check - e.g. if they can resolve a given hostname.
Agree that the static IP may be related to your issue - often DNS server information is provided to a device with the DHCP lease, and without that, the device either must use statically provisioned DNS servers, or assume that the gateway (router) provides DNS
I did check that thread before posting. In that thread, it sounds like there was a much more complex network topology. In my case, I have no VLANs, everything is on the same subnet, and everything has access to the internet.
Well, I switched to DHCP and it's working now. Sounds like this device just doesn't handle DNS correctly with a static IP configuration. Sounds like the devs should either fix that feature or remove it.
I've used static IPs with several clients and they have been working fine just as a counterpoint. I have not experienced your issue.. but typically I reserve an IP address on the router using the hubs MAC and let the hub do it's default thing.