Are you not seeing the Proof notifications on your website? It's possible that your browser's cache is not yet updated with the latest version of the webpage.
Please try viewing your Display urls in a private browser to see your Proof notifications.
Step 1 – Locate your Display urls
Login to your Proof account > Go to Campaigns > Click on a Campaign name > Scroll down to 'Capture & Display'
Step 2 – Open Display urls in a private browser
If you need further help please see below.
Google Chrome > View in Incognito
Firefox > View in Private browser mode
Safari > View in Private browser mode