Hello Arrowheaddealer -
I am sorry to hear that you are encountering difficulty with some of your listings. As a result of some of the changes that eBay has made in the last year or so, it is no longer acceptable to have insecure content posting to eBay. All of our resources are now compliant with this, but if you are using previously saved listings there may be content added directly to the listing description, or in many cases a Seller Details profile where an insecure URL exists that our system is unable to reach. While the images in your image hosting area are all stored and delivered HTTPS, if you previously added an image to a listing description or part of a profile that was HTTP it is likely that this remained HTTP and would need to be updated. In some cases, you may need to ensure the image is stored on a secure server if you acquired that image elsewhere.
I recommend that you file a support case from under the Help tab of the site letting us know the issue as it is occurring for you as well as some example listings where you encounter this and our support team will be happy to assist you in locating and resolving the issue.