Unable to create incidents manually - PagerDuty support not responding

When I try to create a manual incident via the PagerDuty UI I’m getting the message:
“”"
The coordinated_responding account ability is required to access conference bridge details
“”"

Despite the fact that setting a conference bridge is marked as optional (in fact setting a conference bridge doesn’t help here).

This means I can’t page people. This seems pretty core to PagerDuty’s purpose? More worryingly I opened a support ticket on Friday, and have received no response yet.

What are people’s experience of PagerDuty’s (lack?) of support?