I have a h200 with 23 sensors connected. The sensors are showing as connected and online, but none of them are updating. The LEDs on the sensors themselves are still working as expected (eg when opening a door, contact sensor flashes). But the states are not updating in the app. Resetting a sensor and readding it will get the current state, but it then stops updating. Adding a new sensor is the same - it will get current state, and managed to get 1 or 2 state changes after that (though significantly delayed) and then stops updating. 
 

Rebooting the hub doesn't help. Unplugging the hub and waiting 5 minutes before plugging back in doesn't help. Changing between wired and wifi connection doesn't help. 
 

Is factory resetting the hub my only option? Anything else I should try first?