When I try to log in to my account, this message appears

[IvoNikolaev]

Hi, When I try to log in to my account, this message appears . What does this message mean and why I can't sign in to my account. Why is it not clear what the problem is?

[kernowlass]

@IvoNikolaev 

Do you have a mobile (not landline) phone issued in your country and registered in just your name verified on your Paypal account?
Paypal are using mobile phones for i.d requirements for logging in and withdrawal funds for extra security measures.

[IvoNikolaev]

Dear kernowlass

Yes, I had not entered my mobile number in Paypal. How do I know he's so needed? Why doesn't the annoying message say what the problem is ?! Why is there no email connection with PayPal ?! Why should I look for a good bystander like you to answer my question ?! Special thanks to you! All this is very annoying, stupid and nervous!