Device needs to be online for LocalTuya to receive updates for target temperature

[tamueller]

I have several Beok Wifi Thermostats (TGW60W-Wifi-WP) which worked last winter, but don't work as expected when trying to reactivate them again for this winter.

The problem is, that if the device is not connected to the internet and I set the target temperature on the thermostat, I don't get an update into HA. Even when I pull for the current state of the device with the local-tuya node-red plugin I get an old value for DPS 2 (the target temperature). When the actual root temperature of the thermostat changes I get an update. I can also change the target temperature on my tuya app or using localtuya, and it is correctly reflected on the physical device, so the local connection works in principal and for most parameters. I have 5 devices, and didn't change anything in the configuration since last year, but probably made several updates. I turned on debug logging for localTuya but didn't see anything suspicious.

When I grant the device access to the internet, it starts working again - but one of the points of local tuya for me was, that it works without internet access of the device.

Would a DP-dump be helpful here? What other debug methods should I try to provide more information?

Edit: by not connected to the internet I mean that the internet access of the device is blocked by the router.