I have the same issue with the env III unit and m5paper.

I do not have the time and energy to start patching libraries and modules.

The built in SHT30 of the m5paper is not supported by UIFlow 2 and the external unit does not work as well.

This is a bummer.

Hoping m5stack will fix this and update the module/library.
Is there any issue tracker where we can document and queue this for fixing?

UIFlow 2.0 is available now and m5paper is supported, but I fail to find the built in SHT30 sensor. This sensor was supported in blockly in UIFlow 1.

Any suggestions on how to solve getting temperature and humidity measurements from the SHT30 sensor in UIFlow 2.0?

@felmue I have the same problem with two m5stack Fire devices.
Any chance you maybe solved this issue later?

Is there a tutorial somewhere on how to build the UI-Flow Firmware?
Would like to add some libraries, like for example paho-mqtt, and I think it would be best to build a custom FW for that.
https://github.com/EeeeBin/UIFlow-Firmware, referenced from https://github.com/m5stack/M5Stack-Firmware only offers binaries.

Not sure whether https://github.com/m5stack/M5Stack_MicroPython includes UI-Flow.

Any pointers?