Step 1. power supply upgrade - didn’t fix the issue
Step 2. try an older FW version
After manually flashing the WP7702 to an older WP77xx / Octave edge version the mangOH yellow connected to the Octave cloud and remained connected (so far). The following info is for the older FW image
module-2.1.0.wp77xx.spk
Legato version
OTVMODULE2.1.0_03288fcd1015098878f8419aa0b052c6
I then tried using Octave FOTA to update the mangOH yellow from 2.1.0 to 2.1.3 but unfortunately this failed - details are here
Image of the older FW reported at the Octave cloud UI
Any ideas what to try next - I guess a manual load of 2.1.3 if we have the image?