The first step should be to check your app and boot logs on the provisioning servers in order to see if any errors are logged.
This may be simply using old / wrong parameters and this should show up in the logs.
There may also be a dump file being uploaded which would contain technical information for our support team.
Please have a look at the above files and once you want to progress with this contact your Polycom reseller and/or Polycom support directly.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Polycom Global Services
Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels. Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's