i downloaded the advance OS and LED app a while ago and it worked great, but recently it hasn't been working. I have my contacts set as individual colours so that when I get a text I know who it is... but my light isnt flashing differnet colours, just red. how can i fix this? I have tried pulling the battery and deleting/ reinstalling the app numerous times and it still doesn't work. As far as i know i have the latest version because there are no updates avalible on app world. how do i fix it?