Ok looks like turning off 802.11ax fixed the issue! The "WAP Profile" entry in the SSID list didn't go away however (it could not be forgotten due to somehow being placed there by group policy- very bizarre). I was able to clear it though by deleting the contents of "Windows/wlansvc/Profiles/" and restarting the WLAN service. I will probably have to manually do this on any affected Win 10/Intel Dual Band machines that picked up the 802.11ax networks while they were live... Definitely a pain. What a terrible rabbit hole to fall into while setting up my first Meraki network! At least I made it back to the other side of the looking glass though. Thanks for your help all!
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