 
            Renaming the Nighthawk devices means the changing the SSID username, which you can do through interface as well as from the app.
In this type of case, user can’t able to do that. So, we will explain the problem properly first “mywifiext device name not updating”. Then find out the reasons behind it and solutions to fix it.
So, let’s dive into the troubleshooting guide for the issue “Cannot rename devices on Nighthawk APP or using mywifiext EAX20”.
You open up the Nighthawk app, go to the connected devices list, tap on a device, try to change its name… and either it doesn’t save, or it reverts back to something like “Unknown” or just keeps the old name. Same deal when you log in to mywifiext.net — device list shows up, but there’s no actual rename option that sticks.
It’s like Netgear wants to make this harder than it needs to be.
Here’s the blunt truth:
The EAX20, even though it’s a decent extender, doesn’t handle device naming locally. The names you’re seeing are either pulled from DHCP leases or generated randomly. And the Nighthawk app? Mostly just a skin over the actual firmware, so it’s not doing anything magical.
Also — the app doesn’t always talk directly to the extender. Sometimes it talks to your main router, which means you’re not even renaming the device on the extender itself.
And yes, if the device itself isn’t broadcasting a recognizable name (like random MAC address crap), there’s nothing for the extender to “rename.”
Open a browser, go to: http://mywifiext.net (or http://192.168.1.x if you know the extender’s IP).
Log in using your admin creds. If you forgot those? Reset the extender. And rename connected devices.
Under Attached Devices or Connected Devices, you’ll see a list. Some may be named, most won’t be. There’s usually no edit button here — just a list. So yeah, no rename field.
This is key:
If your devices are connecting through the EAX20 but getting IPs from your main router, then THAT’S where you rename them. Log in to your main router’s UI (Nighthawk, Orbi, whatever). Find the device, rename it there.
Some routers let you reserve an IP and assign a nickname. That’s the only way to “force” a name that sticks.
If you’re dealing with stuff like phones, laptops, tablets — go into the settings of the device and rename it there. That name sometimes shows up on the extender/router. Not always, but worth trying.
Not a full fix, but it helps:
Assign static IPs for each device and add a label or note. Won’t change what the app shows (not always), but at least you’ll know what’s what. Less guesswork.
Look for a tiny hole on the extender (usually says RESET). Grab a paperclip or pin. Hold it down for about 10–15 seconds. Wait a minute and let the device reboot.
After that, it is time to reconfigure it. Have a quick look at the Netgear Nighthawk WiFi extender login procedure.
There is a simple and easy way to reach to the WiFi extender setup page within your computer and configure all the settings from the start. Let’s dive in to them.
Hope, one of the solutions has worked and you are able to change the Nighthawk device name from the app as well as from the mywifiext.net on your computer.