@Hank21 Thanks for the tip. I suspect it is because of the latter because all of the client devices have the WiFi credentials hard-wired into their code.

I have three EAPs in a 2400 SqFt home/office, all set to low power because they are within about 5 or 6 meters of each other.  They are spread over the 2.4GHz channels. (Not all on the same channel). What I don't understand is why some client devices will connect to the farthest EAP.  For example I have an EAP in my office and a client device two meters away that connects to the basement EAP two floors below and about 12 meters distant.

Almost ALL of my client devices that themselves report RSSI levels are in the mid 70's.  I should add that all of my client devices are on 2.4GHz.  There is no 5GHz option on any of them.

If I could identify which of my client devices is having problems connecting then I could look at a few remedies at the device level.

Any tips to finding which client device is having issues connecting would be appreciated.