Excellent plugin, but…

This is really an excellent plugin, powerful, flexible and easy to configure.
Nonetheless, I noticed something missing in a SEO perspective.
For every page and post, in the block “Code for ad blocking detection” it add the image “wp-content/plugins/ad-inserter/images/ads.png” without the “alt” attribute. This causes lots of “Missing alt attribute” in SEO analyzer like Semrush.
I suggest to add the “alt” attribute specifying “placeholder” or “icon” or whatever else meaningful.
It would be interesting to see this marginal missing resolved. We won’t have numerous pages marked as “Issue” and this plugin will surely deserve 5+1 stars, at that point.