Evernote explains how the Basic accounts two-devices limit works.

This year Evernote changed its subscription plan and caused some confusion for those who chose to subscribe to the free basic offering. Evernote stated that Basic users can access Evernote on two devices only, prompting long time users to validly ask how devices are actually counted. And Evernote kindly obliged by sending out a short explanatory email to its subscribers.

Evernote made it clear that the app can be installed on as many devices users own. However, Basic subscribers can only access the note-taking service on any two devices at a time. If a user is already logged on two devices and wants to launch Evernote on a third one, the user will first have to logoff on one of the previously logged on devices. If that is too cumbersome, users can always access Evernote Web on any device with an internet connection.

Download Evernote for your devices: Apple Store | Google Play Store | Windows Store