Facebook to WP issue

Hello! I created a new app, Fobomatic login need the email access, to get it I should verify a Business profile, but we are not a full business, so I put the xs and c_user cookie. I started importing the FB posts and they were generated on WP, but the feature image was one of my friend profile pic instead of one of the pics in the posts. I deleted those posts using the plugin action and I tryied again to import all the posts, (4 in total), but they were't imported, so I can't add a screenshot of the issue. So: - should I use a dummy FB profile to avoid the problem with the feature image? - is there a way to reset the post import cache? thx!