As @carl_pearce says, check the conf settings on the Hub. It will show what speed has been provisioned.
It's Configuration tab - Primary Downstream Service Flow - Max Traffic Rate.
If it's not configured, try a reset as below and check again. If this fails, phone VM or wait here a day or two for a VM Mod to pick this up.
Try a 60 second factory pinhole reset as below;
Remove any ethernet cables from the Hub and hold the pinhole reset switch for 60 seconds. Do NOT reboot the Hub, just let it do it's thing. Note you will need the passwords from the bottom of the Hub afterwards, so make sure they are legible.
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