To be honest the fact that your kit is less than 5 years old is likely to be the problem. The peanut is not a programmable remote, it only has the codes it came programmed with, and those codes were from about 5-6 years ago.....
If you have cycled through all the codes and go no hits and you only want to use one remote ( who doesn't
) then you will have to buy one of the plethora of programmable remotes and use that instead. Personally I use a Logitech Harmony 885.