Brian,
thanks for your writing.
Indeed WiFi is an issue with so many mesh products. The reason is that rooExtend does “routing” so if it finds two stations with nearly the same strength and SSID it switches between those. In the rooDial thread rooDial a Wireless Volume Knob for Roon with Microsoft Surface Dial - Audio Products - Roon Labs Community this was an often discussed point because rooDial relies on Zero-W and WiFi.
At luck you found out the mechanism behind license revoking. Also in the rooDial thread there are a lot of posts regarding this aspect. At the beginning you had to revoke on every rooExtend update. Now only if you change the hardware what you did. Basically licensing checks the hardware. So before changing please revoke and relicense on the new platform.
Sorry for the inconvenience. You should have asked me instead of tinkering the whole sunday 
“the space-mouse works really well now.” is not really enthusiastic 
Would you mind sharing your experience with us and the Pros and Cons?