The Long Press function can be a little confusing, and to explain. It is a separate feature that allows you to have twice the button count so for example my Long Press of Mute is set to bring up TV Picture Modes. It should not be set for what I call Press and Hold of a button, so the correct configuration for the volume buttons is “Short Press: Volume_xx(Denon)” and “Long Press: Not Configured”. When set to “Not Configured” the Long Press Feature is not used and pressing and holding the button works like a normal remote.