Your fitbit will only display that message until you have downloaded the fitbit app and gone through the setup process. Is it this process that you are having problems with?
Not all Huawei phones work with fitbit. You can check the list of supported phones at www.fitbit.com/devices
In particular, their "lite" phones seem to have specific issues. Fitbit say:
"Due to Bluetooth issues that prevent certain devices, like Fitbit devices, from syncing, our products aren't compatible with the following phones:
- Huawei P8 Lite
- Huawei P9 Lite
- Huawei P20 Lite
- Xiaomi Mi 6"
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