You are probably still on release 02_02_30 which is what is shipping from OEM. Release 02_03_09 is the current Release for auto-update class MINOR and includes the functionality to send power-factor, as well as apparent power (VA), Amps, and of course Watts (Real power).
If you change your auto update class to MINOR in the Setup/Device menu, your system will upgrade, usually within an hour.
Once upgrad3d, you can set the units of the each measurement that you specify in the EmonCMS Inputs section of the EmonCMS configuration menu.
Default units for current channels output to EmonCMS is Watts, which is real-power. As above, fore parent power select VA.
Sorry to say that the intention to do MQTT was premature. See this post Availability of MQTT? - #9 by overeasy