Hey Mtaylor,
when you upload the image, please make sure that the „File URL” field displays the direct url of the image file (ends with the filename of the uploaded file), instead of an attachment URL (ending with „?attachment_id=xx”); in the latter case, press the „File URL” button below the url field before saving the image. Please let me know if the problem still persists!
Sincerely,
Andrii / Satori Studio