how can i add a watermakr in the editor so people dont screenshot it?
You can set it on Fancy Product Designer -> Settings -> General -> Actions -> Downloads and set a watermark image there
I did, but it doesnt add a watermark in the actual editor only download items
You could add a watermark layer to the product builder.
there is no other way around it from admin part?
no, because the watermark is only used for the download button.
Otherwise you need to insert that layer in the product builder and mark "exclude from export" if you want to exclude it.