This is a problem with the stock driver. When you change to other driver, the divisor that is stored in permanent memory is deleted and when you return to the stock driver, the doConfigure lifecycle is not executed, which is where the key divisor is read and stored in permanent memory.
If you remove the device and pair it directly with the stock driver, it should work fine again.
If this is confirmed, then the device use the same divisor for power and energy, since it only have cluster 0702.
In my driver if you put “Custom Simple Metering Divisor” to value 10 in preferences it must work fine.
With log I could see if device only send simpleMetering cluster messages.