This massage show after login Facebook?

[RK]

"We don't recognize the device you're using. Please answer a few security questions to keep your account safe."

Please give me solution .

[Ankur Sood]

message box

[Karan]

Just go to https://www.facebook.com/help/contact/283958118330524 and fill up form with details of problem and click on send. Your request will be send to facebook and you get a email from facebook in 24 hours.

[Parth Sharma]

It's asking what device are you using- like mobile phone, computer, laptop, etc.

Answer the security questions, OR there may be a skip button

OR click on 'home' on top left corner