Can't Access Night Hawk R6220 Login Page

[Inder_2001]

Whenever I Try To Access Router Login Page It Redirects Me To Login Into My Netgear Account, After Logging In It Says serial number is already registered & redirect me back to account login page

[plemans]

Have you tried doing it using a pc/laptop? 

Or try using its ip address? 

[Inder_2001]

First of all I don't have a PC or Laptop.
Second I have used the IP and routerlogin page both but they didn't help

[michaelkenward]

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@Inder_2001 wrote:
First of all I don't have a PC or Laptop.

What are you using to access the device? A mobile device over wifi?

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Second I have used the IP and routerlogin page both but they didn't help

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How are you trying to access the device? An app? (The screenshot suggests a "2FA" process.)

A browser should connect to the IP address over a wifi connection.

How about a factory reset on the R6220?