We are a free webhost we do not offer user accounts for image uploads. Because of this there is no uniquie identifier on the image that will let us associate all of them with you. So instead we have based sorting the images off your IP address, long as your IP is the same you can view the images you've uploaded before. Due to the nature of being an ISP addresses are rotated often to keep them freed up so other can use them. because of this if your ISP renews your IP address you will only be able to see the images uploaded on your current address.