We recently started using Nextiva. A huge selling point was their integration with HubSpot. However, what they actually have is a very basic integration through Go Integrator that tracks calls as an activity in HubSpot but that is all it is capable of. Their agent and supervisor dashboard can integrate with Salesforce, Agile, and Zendesk but not HubSpot!
We just started using Nextiva as well and the big selling point for us was the integration with HubSpot. We are having issues with the HubSpot contact not showing in the pop-up window. We have only about 10% of our calls that are getting the pop-up with the HubSpot Icon, even though those customers are in HubSpot. If the customer does show up we can hit the icon and it loads the customer contact page in HubSpot and records the call after the caller hangs up, but again this is only for about 10% of our calls. Are you getting the pop-up with the HubSpot customer icon on all your calls?