This model of phone is a bit odd when it comes to APN settings.
When I turned on the hot spot and connected, I couldn’t get any pages to load on my laptop. (It had an IP address but could not route through the phone.)
Eventually found a hint online. Check your APN settings, and if it doesn’t have ‘dun’ mentioned in the APN type, try adding it with a comma and no spaces.
(dun means dial up networking I think.)
This may also some to the Huawei G8 and that G7 plus – this model appears to go by both names??