Edward SThis post is deleted!
@ubnt-brett Sorry, that does not solve that problem. I have it, too. The device will be configured with the EXACT name of the network. The additional SSID feature appends a suffix, with no way to remove it.
Many WiFi accessories (doorbells, appliances, even essential oil diffusers) operate only on 2.4 GHz. Your phone and the device need to both be on the same network and frequency in order for an app to set them up. But once setup, they can communicate across the router.
It's not ideal, but it is the reality. The ability to turn the individual radios on and off, like every other router on the planet, is a necessity.
@edward-s Thanks for your suggestions!