Why are the imported images of the demos watermarked ?
Please note that these images have a premium license and cannot be used for public usage. The main purpose of these images is to show you how your website can be and give you an idea to design and use your own images.
But also we have very good news for you too. We are developing a feature for your case as well, in that case, when you are importing a demo you can sign in to your Envato Elements account and then the images will be imported without any watermark as well.
We cannot give you an estimated time but we are working on this right now
For now, you need to replace the demo images with your own when you import any of the demos.