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Unfortunately that phone is probably not going to work with Fitbits. Here is what Fitbit says aboutbthe Lite models, though not specifically about your phone, so there is some hope it may work.
'Due to Bluetooth issues that prevent Huawei Lite models, including P8 and P9 Lite, from syncing with some devices, like Fitbit devices, our products are not compatible with these mobile phones'
The best thing you can do is have a look at THIS Help Article on Troubleshooting Syncing Issues.
If you cant get it to work, do you have a laptop or a tablet you could use (One on the Supported Devices List would be best)
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It's great to see you around @Melis2fit and @NellyG thanks for stopping by.
I am glad to see here that our friend replied your inquiry. If there is anything else we can do for you, do not hesitate to post it.
Keep the stepping up! 
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