Chime Pro Seems to have broken my Network

Has anyone else seen this.

I bought a new Chime Pro and installed it yesterday. Plugged it into the wall, added device, got to the WiFI part and selected my 5 GHz network.

Then all of a sudden all my Alexa’s (I have Alexa in every room of my house), My WiFI printer, and several other things stopped working and will not work when joined to my 5 GHz network any more?

This seems very weird. Is it sending out conflicting SSIDs or something?

Thanks,

Terry

Is it a Chime Pro or All New Chime Pro?.
The chime pro with the 2 antenna only connects to 2.4Ghz