Imported images issue

Hello, I have been using a demo version of this plugin that I was using and have upgraded to the paid version today. I had issues importing images, ie. when I turn off all the settings to import, the pluging inserts the image from the original, even if I try to change it for a royalty free image. In the preview it shows the royalty free image, but when published it shows the original. I hoped the updated version would address this. However, the problem seems to be worse. Previously published items are now glitching in that the posts featured image has replaced my site logo. (Image attached) My site logo should obviously be where the picture is in the header. It is very frustrating that published posts are affected by changes made to download other feeds/items. It there anyway to fix these issues please?