How to set up an opteka RC-2 remote to a Nikon D3000?

I have been trying to do this forever now. I have seen in a few reviews others have gotten it to work, yet mine still won't. I have switched the release mode to the quick release remote and still nothing. I have aimed it at my camera at every damn angle possible, but it still won't work. It's driving me insane.

Have you tried it on any other Nikons?

You could be cheeky and go to a camera shop and try it there just to make sure it is working.

I presume it's got a working battery in it and it's the right way round.

Only 1 time I made it work