Hello Cloud PBX Support,
welcome to the Polycom Community.
You should try UC Software 4.0.11 and if that shows the same behaviour open a support ticket.
In order to raise a support ticket you need to work with your Polycom reseller as they need to do this for you.
If this is some sort of an Internet discounter please post your phone's MAC address so I can look up who would be able to support you.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Best Regards
Steffen Baier
Polycom Global Services