Anyone know how to make Interactive Avatar work in Unreal 5?

Hi, there. We are developing an APP based on Unreal 5 engine. We try to implement the interactive avatar function in the app. We asked the heygen team they said only only do through the web view function. But somehow we use the web browser plugin to launch interactive avatar, always doesn't work. We asked this to the Heygen team again, they said it was because of the CFE plugin to enable Webrtc to work properly. But we have tried many ways, don't know how to setup to make Webrtc works in Unreal 5. Any one could help?