Hi Mpwhite3d,
You will need to have flash installed as I think you are using the old RTMP setup.
We get the message.
Update RequiredFlash player is needed to use this player please Download.
Browsers have moved forward quite rapidly since RTMP and HLS is now the fully supported method for secure video, the RTMP setup will still work with flash installed but browsers have basically said they are dropping support for flash and it will no longer be a default in the browser HTML tech has taken over.
https://redmondmag.com/articles/2017/07/25/adobe-ending-flash-support.aspx
You will need to switch to HLS or ask your users to make sure flash is downloaded they should get a message like we did.
Best Regards
Sam