1. Can user intercept the image while retaining "the Adobe Stock preview watermark" and repost it on FB or other social media ?
2. Can user post or reprint and add a trademark on "the Adobe Stock preview watermark image", and post it on FB or other social media?
Let me know if you still are unable to get the answer.
1.Do you mean the watermarked image is unlicensed?
2.Users cannot edit the watermaked image and post it on FB or other social media,
or even add a trademark on the watermarked image?
A watermarked image is unlicensed and is not allowed to be used for publication. The watermarked image should only be used showing the customer how the design could look and may be to allow the customer to choose between different motives.
You can edit watermarked images for showing your final customer how you intend to present the picture, but you should not post a watermarked image publicly as the final design. You need to license the image first.