Site issues

Say…is anyone else on this site been having issues with the videos NOT displaying so one cannot view them? I try to contact help on the site, but it also state that the “default client was not properly installed and could not be displayed”, whatever that means??. I am somewhat techno challenged, so maybe that’s my issue contacting site help. If anyone has an opinion, feel free to chime in please. Thanks

What hardware? What OS? What browser?

Most videos here are probably YouTubes. Can you view YouTube videos normally - outside of this website?