So, the remote itself is functioning properly. It also represents the only remote officially offered by Olympus for E-620, and it makes one wonder, that this is a user problem: The remote control is only recognized by the camera when you are in the camera in the area before, not behind it. The foldable monitor although you can also pivot forward, however, is only on the side where the IR receiver is not. So you can not use it wisely together LiveView (or the entire display) and remote control.
Now you would have this flaw might be more the camera as the remote control to attach. However, since probably only buy most buyers the camera and then a remote control should be pointed out here on this issue.