hi @This2shallpass - make a copy of your existing Guest SSID and we'll use that for testing purposes. Once you've made a copy maybe rename to MeetingRm_Wless or something applicable to your use case.
Now we have a separate SSID for testing purposes and this won't affect your existing network.
Go back to Radio Settings and copy one of the existing RF Profiles - by default they'll be one called Basic Indoor Profile or Basic Outdoor Profile.
Are you able to get that far?
Darren OConnor | doconnor@resalire.co.uk
https://www.linkedin.com/in/darrenoconnor/
I'm not an employee of Cisco/Meraki. My posts are based on Meraki best practice and what has worked for me in the field.