Afternoon mate. Can you post a link to one of your free products with this problem? I'll take a look for you.

https://

And if you can see, there is also problem with too small picture in popup.

I'll take a look for you mate. The zindex problem could just be a small bit of CSS to add. The image size might be the thumbnail size on your site, you might need to put a custom template in your theme files for the popup, but I'll see myself tomorrow.

Thank you! I will be grateful for your help!

If you add the following custom CSS to your site, the easiest way would be from the theme customizer menu, then Additional CSS, the z-index should be sorted for your theme:

body.somdn-capture-email-open header.header,
body.somdn-capture-email-open div#navholder,
body.somdn-capture-email-open div.subheader,
body.somdn-capture-email-open a#scroll_totop {
    z-index: 9;
}

For the thumbnail it looks like your smallest thumbnail size is really tiny, which is why it's low resolution. Your thumbnail also has lots of whitespace around the image, which makes it look smaller.

You might be able to customise the template file for the email capture form, but I'd need to dig into your site a little to see what size needs to be changed in the template. You can open up a tech support ticket and I might be able to help further.

Thank you! 🙂