Galaxy S II WiimoteController

Hi there, I just want some help with the WiimoteController app. The official website says that the Galaxy S II with ICS is able to run this app with no problems now.

However, I'm having trouble connecting my Wii Remote with my S II. Whenever I press the Connect button in the app, it keeps asking me to enter a passcode for Bluetooth pairing, which should not be popping up at all. I know this isn't meant to come up since it didn't on the Nexus S I tried it with.

So I just want to know if anyone who uses this app on the S II knows a solution for it.

Thanks.