widget : problem with ct : Advertisement

hi ! I want to publish a link in a widget, by using "ct : advertissement". if I wright the link in "link url" and a word in Alt text:, it's not OK (the link appears in the website). If I wright the link in "link url" AND "Image Url:", and a word in "alt texte", it's ok (the word appears like a link in the website), BUT there is an "icon" before the word / link in the website, that's not ok for me. Can you explain me what to do to have just a word (and it's link) in the website ? here is the page with the widget, where you can find the probleme: http://jardindeshetres.fr/les-paysagistes thanks !!