Mobile phone to create app

Hi, I’m creating the app to run the plugin but I get:

Error
You must add your mobile phone to your Twitter profile before creating an application. Please read https://support.twitter.com/articles/110250-adding-your-mobile-number-to-your-account-via-web for more information

I don’t want to add a mobile phone, I don’t know why I should HAVE to… Is it something the plugin requires or only Twitter?!

https://wordpress.org/plugins/wp-to-twitter/