To keep your account secure, when you log in from a new device or connection, the following message will be displayed on your screen:
Just enter the message sent to your email, click on the "Authorize Device/IP Address" option, then close all the windows (including the one that opens when you click the link), and in a new tab log in as you always have.
*IMPORTANT: Opening the link from a private/unknown browser will not verify your device/IP address.