Current Compatible Devices:
- Forerunner 935
- fenix 5 series
- fenix Chronos
- Current Running Power
- Current Lap Running Power
- Last Lap Running Power
- Average Running Power
- Combo Running Power
Running Power requires Connect IQ 4.2, which became available with 935 firmware version 7.00. As your watch was purchased in China, I assume it is an APAC version - APAC software updates are typically 6-8 weeks after RoW watches. 7.00 I think was released around 5 Dec 2017, so hopefully it will become available for APAC watches very soon.
As you are still running CIQ 4.1.x, that is why it is coming up incompatible.
Wait for so long for the APAC version to be updated to 7.10 this morning but the app is not compatible with it. Following this pattern, APAC version will never get running power......