Hello,
Promo popup is designed in this way that it will be shown only the first time when someone comes on your site. There is no such option in theme to display the popup each time when the page refresh. The only way is to clear your cache and you will see it again.
And your popup already does not contain any border.
The width that you set for your popup form the Theme options >> Shop >> Promo Popup >> Popup width is the actual width of the popup box in which your content exist.
Screenshot: https://screenshot.net/k09z6cx
Front view popup width: https://screenshot.net/kg4kwa5
You can change the image height by modifying the html block which you have used as a promo popup form the html block option in your sidebar: https://screenshot.net/k37jetn
Image size: https://screenshot.net/kzw02tp
To achieve that look of popup simple use 2 columns in a row while editing your popup html block with Wp-Bakery and then use your content on right column and image in the left one.
Best Regards.
.
