Also, as an aside, my climate entity is off by a factor of 5 for some reason - is there any way to change that?! e.g. it shows 4.3 degrees instead of 21.5 degrees
Factor 5 off- Tuya integration For me it helped to quit Tuya via reflash but some local Tuya may also help?
Maybe look for Simple Thermostat lovelace card (on HACS) - highly customizable
Best, JR
If it is 5 years old there is a good chance that it incorporates ESP8266 module which is easily flashable
Anyway, good luck- and if only temperatures are an issue- then template sensor.
Best, JR