TomasS1
Thanks for getting back to me. It seems like the best route for now would be to speak with a support agent who can review your settings and ensure everything is set up properly. I've gone ahead and created a support case for you, someone from our team will reach out soon.
As a diagnostic step, you may want to try streaming to another RTMP platform (like YouTube or a free RTMP server) to verify your GoTo Webinar is properly pushing the stream. This would be helpful to know.
Let me know if you have any further questions or comments.