In addition to generating a verification code that you can manually enter, Adobe Authenticator also sends you a notification on your device. To sign in, simply tap Approve.
If you do not see the Manage button, first set up 2-Step verification as explained in Activate 2-Step Verification.
When you enter your Adobe ID and password in the sign-in screen, Adobe Authenticator sends a notification to your device, prompting you to approve the sign-in.
Open the notification, and you can see the options to either approve or decline the sign-in authorization.
To sign in, tap Approve.
You do not need an active Internet connection to launch the app. However, you need an active Internet connection to register the app and to use notifications to sign in.
Alternatively, you can sign in by typing the code generated by the app, for which your phone does not need to be connected to the Internet.