How to i remove the yellow block above my ad?

I think there is an issue with some themes automatically adding <p>...</p> and <br /> tags around HTML comments inserted by the plugin. Most of the support questions seem on the forum seem to be related to that. Since these tags are added after the plugin does its work, I cannot fix it in the plugin. What I can do is to give an option to suppress comments. I will make a release with it in a couple of days.

add to your style.css

/* remove yellow background from adsense */
ins {
 background: #ffffff;
 text-decoration: none;
}