Flabbergasted

I am somewhat flabbergasted with the straightforwardness of the plugin, after struggling for hours with Poptin, another pop-up plugin.
If and when you’ve done WP editing, it’s easy to make your pop-up. It still is complex. I did not manage to get the color of the X right. But then you can just decide not to use it.

Appearance, disappearance, it’s all very flexible.