redfire not working

Hello everyone.

I installed redfire 0.0.5 on my Openfire 3.7.0

I installed redfire 0.0.9 on spark 2.6.3

Now when I try to start a video conference, both person get a grey screen. After a little while at the bottom of that screen it says:  Enter... connected

But nothing else. No voice, no video.

I attached the logs of spark.

Any idea on what the problem is?

Thanks