Variation Images not Showing

Can someone help please, i imported over 500 products from dropshipme and found out lots of the variation images are not showing. See attached image for example
Hello, unfortunately there's no screenshot attached. Please try to remove a couple of such products and re-import them using Re-import button. You need to wait until the progress bar is full and green and importing is complete. If the problem remains, please PM me your WordPress and cPanel access credentials so that I could take a look at your admin area.