WIFI ON ATT MODEL 5268AC...

Troubleshooting is more or less self serve because most clients fix issues themselves quicker.

"No wifi on one of our networks for all Apple devices." You have more than one WiFi at this location? They are using different SSID's right? How about WiFi channels, are they different?

If it is asking for the password over and over most likely the password being used is wrong.

Static IP addressing is not a workaround for the inability to connect via WiFi. I would leave it in DHCP.

Yes, two different SSIDs.  Note only Dell laptop will connect to Uverse SSID.  No, password isn't the issue.  Model 5268ac F... is for all Apple devices.  What happened to looking at settings at our attlocal site?  By the way your  troubleshooting steps refering to 192.168. .... server can't connect.  How do I see my settings for Uverse service? Yes, I know my userid and password. 😉

Can I send you a screenshot?

It is well documented that Apple devices occasionally have problems with specific types of security protocols for connecting to wifi. Off hand, I don't remember if it is a problem with WPA-AES, or TPK or ... but if you go into your wifi security settings at http://192.168.1.254/cgi-bin/wconfig.ha and see which you are connected to, you can try changing it. A quick Google search may tell you which are the problematic protocols.

If you can't get into the RG settings, you either have to directly connect to the RG with an ethernet cable (preferred method), or factory reset the router and try connecting with the original SSID and password printed on the RG. If you can't access the interface then, there may be a problem with the RG.

Uverse network

Server stopped responding: http://192.168.1.254/cgi-bin/wconfig.ha.

I have been an Apple user since 2009; MacBook Pro, two iPads, two iPhones, and AppleTV. I have never ever had WiFi issues.

There is no guarantee that the IP address of your gateway/router will be 192.168.1.254. You should go into your Windows (I am assuming) Dell laptop network settings to determine what it believes the router address is. Then use your web browser to connect. The password should be on a label attached to the gateway/router.

You may attach snapshots using the photos button (Rich Text).

Realize that Apple products default to the first character being capitalized when performing keyboard entries. So when keying the password for WiFi watch the status of the shift key.

"I have never ever had WiFi issues."

Lucky for you but the problem is quite well documented.

Uverse channel 5

Tried both WPA AND WPA2 NOTE: Screenshots

Oh, OK using my Uverse IP is it still ... .168.1.254?