There are a few things that you need to know before using, and in order to use the system correctly.
The ads will work if your page is http only, but if so, context aware ads will not work properly other than for the front page. Therefore the recommendation is to have your site on https. This should not be a big deal, as nowadays most sites are on https by default, but it is still good to be aware of this.
In addition to https, modern browsers will not send the referrer if not explicitly specified. That is why you have to use the attribute referrerpolicy="no-referrer-when-downgrade" wherever you ad a link to betweenaffiliates.com so that we will be able to track it properly. As stated with https, it is not a necessity, but in order for correct statistics(to know how pages compare to each other on your site), better training for context aware matches, and for context aware option to work properly it is highly recommended. Note also that ads that are provided by iframe and script always will have the tag on them, but it should also be put on the script tag and the iframe tag for best performance. Example, there is a ad on the page https://betweenmovies.com/movie/salome-1908/, with the correct referrer policy, we will know that this is the page the ad is on, otherwise we will only know it is from https://betweenmovies.com/ and we will be unable to track what specific page is best performing.