It worked for years, and then just disappeared as an option.  I changed nothing on my computer, nothing about my - paid - Zoom account - and the option is suddenly gone, and none of the troubleshooting works either because the option is no longer present even in the settings where your troubleshooting says to go and turn them on - the option is no longer there.  Again - I re-state - it is not my system.  My system has not changed.  Zoom changed.  Please fix it and revert to the way it was when filters worked, very recently.