When you reply there should be a menu bar above the entry field. On the far right side you can see the mountain with sun icon. Press and that should give you prompts for uploading images from your ”source” which is this case would be your image library.
You can send u a message at the support email firstname.lastname@example.org where we have the purchase history and resource material to help determine the correct size. We will send you a replacement in the size of your choice at minimum expense to cover the basic costs involved.