From other posts I read that they are not actively monitoring the forum, phasing it out. But the alternative solution to send them a message to team@getvideostream.com doesn't seem to work either. "Your email to group team@groupnotes.ca was rejected due to spam classification.". It seems you can contact them using a G Suite gmail account, something I do not have.

Also Canary (Chrome dev version) 59.0.3046.4 didn't work with Videostream. I have Win10. Other Chromecast video apps like "Cast player" streams mp4's, but I much prefer Videostream when it works!

Videostream Pro just suddenly stopped working for me. I had Chrome 56.0.2924.87 as willie525 noted had a problem. Then I installed Chrome Version 58.0.3029.19 beta (64-bit).
It is still not working.... I have also tried uninstalling and reinstalling chrome with no success.