They were just relocated. As per Release notes for 4.x


Enhanced configuration and monitoring features are now available in OvrC

MoIP firmware version 4.0 moves the MoIP configuration from the local interface to OvrC’s MoIP System Management, found under the MoIP controller’s Configure tab. All configuration options are now only available in OvrC.

MoIP Endpoint status: All MoIP TX and RXes now appear as individual devices within the OvrC device list, providing real-time status and notification support.

Easier Configuration: With all configurations now available in OvrC, making changes to the MoIP system is now much more convenient and easier.

Platform Updates: With this transition to a new technical architecture for MoIP in OvrC, Snap One can deliver additional features in the future which would not have been possible otherwise, such as increased network visibility, health status, and more.