Not able to connect Mambo HR wrist band with Iphone 6

I just purchased the Mambo HR wristband from Beijing. I installed lifesense app on my iphone 6. The Mambo HR is able to connect via bluetooth to the iphone 6. But after that I try to connect form within the Lifesense app, it's not able to find the device (Mambo HR band).

Thanks in advance for the help!