Using the "+" button allows you to securely add a new credential from mobile.
To add a new credential:
1) Hit the "+" button
2) Input a valid URL of the site you wish to generate a credential from
3) Insert username/email
4) Manually add a password or click "generate" (highly recommended)*
5) Hit save
*Once you generate a password, it is automatically copied. Simply go back to the site you are looking to create a credential for and populate there. Make sure you save credential after doing this.