Are you sure it is not placed? It might be that your browser’s cache displays not watermarked image while the file on the server has changed. Please take a look at the files itself, find the images directly in the location in your wordpress installation (wp-content/uploads) and open it with some image viewer (not through the browser) and let me know if it is not watermarked really.
If it’s not, please take a screenshot of the plugin’s settings page and email me.
Nope, just checked it normally by downloading it through the FTP. Still same old without a watermark. I’ve e-mailed you the screenshots :).
I’ve seen your screenshots, everything seems to be ok… Do other watermarking methods work? (have you tried to use “watermark all” option, and click “Add watermark” button for a single image?) Please let me know if it watermarks the images using any of this methods, or it doesn’t watermark at all?