Google Ads passing through?

First: Sorry for double posting. I posted this by mistake on System Settings (couldn' t move it to Web Filtering). I have a FortiGate60c Firmware Version v5.0,build0292 (GA Patch 9) with security profiles (that have not changed in some time). Lately, I' ve been getting some Google ads on some websites. I still see my block page in most websites, but it looks like it is getting more and more common. We have all the Fotiguard services licenses up to date. How can I fix this? I don' t see anywhere to update the database definitions or something similar? Thanks,