I've followed all instructions for using Powerpoint as virtual background. My zoom client is updated, My computer itself is updated (Windows 11) .. it should work. BUT the Powerpoint button is greyed out and won't let me add Powerpoint as a virtual background (so that my image video is part of the presentation) I can do the usual share screen, but the advanced tab simply won't let me add Powerpoint .. as stated above, it is greyed out and not letting me use it.