To register the program click on the black down-directed arrow next to the help button. In the new interface it is situated in the top right corner. Choose the menu item Register ABViewer.
Dialog for ABViewer registration.
Please enter Name, E-Mail and Key into the respective fields of 'ABViewer Registration Dialog', and then press the Register button.
Press the Trial button if you are only evaluating the program.
Press Floating License Registration... button to call Floating License dialog.