I don't see the PageProofer icon on my website
First
Make sure you have added the embed code to the page on your website that you are looking at. Ideally the embed code is added to a footer element that is used on every page on your website. If you check the page's html source and don't see the embed snippet, sign into PageProofer, go to the 'Site Settings' page for the site you are working on and click the 'Javascript Embed' tab to get the snippet. Add it to the website.
Second
If the embed snippet is on your website and you are still not seeing the PageProofer icon check the 'Site Settings' to see if the disable option has been checked. If it's checked change the option to 'invited users'.
Third
Make sure in the site settings that the url exactly matches the url you are attempting to use PageProofer on. If you had entered 'https://www.my-website.com' instead of 'https://my-website.com' the url mismatch will prevent PageProofer from loading.
Fourth
If you have tried steps 1, 2 and 3 it could be a cookie issue in your browser. Try this help article for help in adjusting your browser's cookie settings.