MANY videos and previews won't load
I have had a Viki Pass Plus subscription since 2018. This has always been a problem but I'm finally frustrated enough to post. On MANY videos and previews even though the progress bar at the bottom of the screen shows that the video has finished loading or is mostly loaded the 'circle' in the center of the screen just keeps spinning and the video never starts. (The longest I have been willing to tolerate this is 10 minutes.) I have tried the suggestions from the generic Help section. I have turned off my anti-virus programs - I don't like doing that and I shouldn't have to. I know there can't be one solution for every computer configuration but since this only happens on Viki there seems to be a problem here since some videos play full-screen very well. I am using Firefox 72 on a Windows 7 Professional computer and a DSL modem. Thank you for your attention.