If your Upload window is blank or empty, this is most likely due to an ad-blocking extension or plugin you have on your browser. Switching browsers, disabling the ad-blocker, or whitelisting the Upload window address will resolve the issue.

If your Upload window is blank or empty, this is most likely due to an ad-blocking extension or plugin you have on your browser. Switching browsers, disabling the ad-blocker, or whitelisting the Upload window address will resolve the issue.