I think maybe there is a bug in the mobile app.
I can successfully move joints with the m command, or make noises with the u command, but when I use the M command nothing happens.
I have tried both the iOS version and the Android version and neither works.
Using the example code:
* MOVE joints simutanuosly
M 0 -45 8 -30 12 -60
Thanks for reporting the error. I have replaced 'M' with 'i', while 'M' becomes the binary form of 'm'.