PALATINICADIZ Hi there, what makes you believe the banner was causing your traffic to decrease? Do you have a screenshot of the ad / banner you are referring to? I'm not seeing any immediate issues when I access the site, so would like to make sure we are on the same page.
Unfortunatley, it looks like your traffic started to decline as a result of the Helpful Content Update that happened in September. The update started rolling out around the 14th and after this, publishers have reported drops in traffic. It looks like this aligns with what you are seeing in your data here: https://analytics.ezoic.com/reports/traffic/trafficDaily
You can read more about the update, here: https://www.searchenginejournal.com/google-september-2023-helpful-content-update-changes-to-the-algorithm/496454/
A member of the team recently held a webinar about the update, offering further insights and tips on rebuilding your audience after the drop in traffic, I recommend you check this out: https://support.ezoic.com/trainings-and-events-info.php?id=341