Recently installed Acrobat DC and pop-up window is blank when browsing My Computer

Upon starting Adobe Acrobat  DC on my MAC, I select from HOME - My Computer - Browse.  There is a pop-up window that comes up, but it does not display the contents. I can click towards the middle bottom and a smaller pop-up comes up asking if I want Adobe PDF files or all files. If I select All files, I can double click within the original pop-up window and I will get a message stating that the file selected is not an Adobe file. From here I can close the empty pop-up.

Is the installation bad? I have checked for updates, but have the latest version and no updates are available.