shows ads in notify window

Causes white flash while loading pages, also messes with CSS on some websites. Don't install this.

Worked well.. then it started showing notification ads. Unacceptable.

This addon works. I guess there arent many addons like this for ffox 57.
I am adding 1star review, because there are popup ads, that will display for no reason.
This is not mentioned in the addon about section. There is also no option i can see to donate and disable the ads. Is this even allowed, for addon to add popup ads? I have never seen it.
If its allowed and it will be added to the about section, i will update this review.