Unable to import Powerpoint with the advance function of slides as background

[LindseyAndo]

Unable to import Powerpoint with the 'advanced' function of slides as background. I had a window pop up that has never popped up before asking to access something in order to read my powerpoint. cookies or something, I cannot remember. I said no. And now I can't get back into it. Is there a way to reset my original choice or something?