I am currently working on a WordPress website, having installed Google Analytics. GA is running well, but especially with regard Facebook traffic, it shows completely other figures. After publishing a "viral video" post on Facebook (and adding a call to action “more” linking to our website), WP Statistics reports many visits, while GA captures only a very incremental increase. We started to use UTM codes but this did not led to any chances.
I my opinion the error has to do something with the In-App browser of Facebook. If people click on a video, the video runs in the upper 1/3 of the screen and in the lower 2/3 the website is loaded/displayed. Is a potential reason that Facebook caches the website to deliver it faster to the users? Consequently, GA cannot capture this traffic? But why is WP Statistics able to do so?
I would love to find out more!