I have received my Pocket Reform very recently and have been very happy with it until now!
The keyboard and trackball are amazing as well as the general form factor of the device.
Unfortunately I have an issue with the battery, I can charge it but it never goes past 49%. I have tried several USB-C chargers and got the same result.
I can see the voltage of both cells in the OLED screen and they are showing 4.0 and 3.8 so my guess is that they are properly connected and functioning.