I’m happy with my SONOFF SNZB-02D (with display) and Aqara temperature sensor (without display).
Both are Zigbee, and measure als humidity.
Looks like that a new version of the Aqara sensor (T1) with Zigbee 3.0 is available.
Take into account that battery sensors send normally only values if the values have changed.
Or do you see different values on the display of the sensor and in homey?
In the settings of the sensors is it often possible the change the reporting intervals. Have a look to that, maybe that helps.