I have tried updating the dtoverlays but it doesn’t show up as a serial port on Windows/Linux machine.
I had to follow steps in here do a manual run of
modprobe -a dwc2 g_serial --first-time
which seems like should be done with configuration options on Balena Cloud
Note: my dtoverlays look like
"vc4-kms-v3d","dwc2","dr_mode=peripheral"