Hi,
How did you Uninstall Bonjour?
I can not locate it.
I try connect my Mac Book Pro running with OS Big Sur 11.2 with no luck.
And with iMac late 2012 running with OS Mojave 10.14.6 with the same result.
I uninstall FlowSync, install newer version 4.0.6 and still can not ad V650 into my devices.