You might need to prefix the image source with a folder name if the images are saved in a special folder. For example:
Your image tag might look something like this:
<img src="<?php echo $row_WADAProducts['ProductThumb']; ?>" alt="" />
But if the image are stored in an imageupload folder, then you need to update it to say:
<img src="../imagesupload/<?php echo $row_WADAProducts['ProductThumb']; ?>" alt="" />
Also, is the image name being stored correctly in the database when you insert?