Connecting Bluetooth to android/ straightforward explanation

I have a crono fluid trainer and I’m trying to link my speed and cadence sensors to an android–Huawei p10.

The app runs fine but it doesn’t pick up the lifeline cadence and speed sensors through Bluetooth. Nothing found when trying to pair.

Can an android device directly connect to sensors through Bluetooth or
do I need a ant+ USB stick plugged into phone through a USB on the go connection?

It runs fine when I’m linking up to mac but I would like to try android. Thanks