I just added your plugin to my local/ in development website and I encountered an issue when I add a border radius to the design in order to get a round-shaped popup. The popup is white and it looks good with the radius as long as I scroll over a dark background. But whenever I scroll over a white/ light color background, the radius is no longer respected and I can see square corners again, sometimes the square corners look transparent if the background is light grey, or solid if the background is white. Could you please look into this? Your plugin is the only one that actually works the way I want… except for this annoyance.
I would also like to mention that I don’t use any other plugin right now. However, my website is built using the DIVI theme, though that shouldn’t matter.