I bought the same device and have the same issues with only having limited identities. I guess we need someone to create custom quirks for this at least for me using ZHA. I only found this thread but it discusses a different tuya smart meter: I have a Tuya Smart ZigBee Energy Meter connected to Home Assistant using a Sonoff Zigbee gateway. However, it only displays diagnostic information such as LQI and RSSI; the sensor information is not visible
btw. I bought from Aliexpress this device from Tuya also available as a white label by the name of EARU. (see link here: https://www.aliexpress.com/item/1005005993765047.html?spm=a2g0o.order_list.order_list_main.17.62fb5c5fluNBQk&gatewayAdapt=glo2deu)
Device Information: TS0601 von _TZE204_x8fp01wi