so the Wyze devices strictly use ONLY the 2.4 ghz band. it looks like the router you bought uses one ssid for both the 5 and 2.4 frequencies. so more than likely the issue you are having is that the wyze devices are trying to connect to the 5ghz frequencies or at least are seeing them and having trouble “making up their mind” type thing. I went to a wifi 6 router a while ago and faced the same issue and ended up getting a different wifi 6 router because I couldn’t turn off the 5ghz radio in the router AT ALL among other issues I had with it.
in a quick search I came across this ( please check with your owners manual for the router for clarification) but it looks like you can do a temporrary disable of the 5ghz radio in the Eero router. with that disabled for a short time you should be able to set up your Wyze devices. now whether you have to do the temp disable for each device or just turn 5ghz back on when you get them all set up I do not know.
this is from Eero support. it looks like this refers to the Eero app version 3.5.0 for android and 3.9.0 for IOS…not sure what version they would be on now as this isnt dated. hope this helps in some small way.
additionally I would check youtube, how to disable 5ghz on Eero ( insert router model) and go from there.