AP Cryptography Settings

I was checking the settings of a family member's AP.

It was broadcasting on 2.4ghz and 5ghz, with two different SSID names and the same password.

Factory defaults.

Thought I'd better secure it down...

Renamed both the 2.4ghz and the 5ghz SSIDs.

Gave each their own separate password.

Set the Authentication to WPA2/WPA3 AES

Every thing worked, then a couple days later I get a call saying that there are no WiFi Connections on the iPad.

The iPhone seems to be running away well.

Checked my iPhone and it works too, checked my iPad and it had the same failure.

iPad said the Wifi router had no internet connection

Since this is really only needed for home use, and since 2.4ghz is a longer range, the mobile iDevices can stay connected as they move through the house, thought, disable the 5ghz, keep the WPA2/WPA3 AES on. Nope, iPad said the Wifi router had no internet connection.

Soon as I put the encryption to WPA AUTO...both iPads connected.

Had a thought that the issue may be that I was using two completely separate passwords.

But then, if I disabled the 5ghz band, I would have thought the WAPA2/WPA 3 AES would have worked fine.

Pretty much a basic router provided by the ISP.

Might keep playing with it next time I visit....might get hit with a rolling pin for breaking the network!! Dangerous times!!

Anyway, if anyone has an idea please share!?