Hello,
I've the same issue.
I own 2 Huawei phones, the P8 Lite and the P10 Lite,
With P8 it's very hard to make it work. with P10 is instant connect.
I'm with 1.5.0.2 on the band.
I've managed to connect it once with the Mfit App and the notify& fitness.
I've then removed Mifit, and can't...