Answer to number two - you're not making the number high enough. Mine is set on 2000 which is just a couple of seconds.
Answer to number one.... not sure. When I installed ES I already has this footpedal and all I did was plug it in then open up the software. Might sound obvious, but have you tried that? i.e. plug it in the USB before powering up the PC then opening the Olympus software as it may automatically "find" it.
HTH