Why i cannot sync google account on a new Huawei P9 Lite?

I just bought a Huawei P9 Lite. During the initial configuration i entered my google account credentials. Now when i open gmail app it says "Account not synched".
The "Sync now" button doesn't do anything, the "Change sync settings" open the account sync page with a list of services to sync.
Next to "Contacts" and "Gmail" i have a spinner (that is not spinning). Tapping the "Sync" button doesn't remove the spinners icons.
Also, i have no contacts synched and i cannot open play store (it says that google account authentication is required)

I already have factory reset the phone and got this situation again.

What can i do?

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