This forum is full with NSPanel Pro issues, maybe start with them?
On topic, I salute Sonoff embracing Home Assistant as for me NSpanel became just a screen with 4 buttons that control heating trough Home assistant as Ewelink can’t manage complex scenarios.
Want to creat a great thermostat? Is not just to look good, it needs to be usefull. I need to be able (hopefully trough its zigbee) to control switching relays for pumps, actuators, fans and have a minimum regarding inching, delays or other rules. I own a house, a basic thermostat functionality is limited for me. (I explained here Manual scene enabling other auto scenes doesn't work - #20 by danordean ) and this is why I give up on NSPanel (see here Many years of using Sonoff and eWeLink - but I'm tired of the problems with it. What alternative? ).
On other matter, maybe improve the responsivness? Is slow, laggy. Also popup pages to group the icons in more relevant way (read may rant here: Sonoff NSPanel Pro - #7 by danordean or here: Ns-panel - ability to "show as seperate tiles" - #2 by danordean )
It is good to se that you focus on this great product, maybe I will return to it in the future. As for now I mounted cheap tablets around the house that combined with Kiosk browser and HA resoved what I expected NSPanel to do.