I tried to use the tracker proxy for some of my websites and went through the step-by-step implementaion but I see no data for the websites in my self-hosted Matomo.
I went through the implementation steps again to be sure that nothing is wrong, but found no issue. I implemented the tracking script with Google Tag Manager, but when I check my sites with Ghostery I see no Piwik / Matomo shown in the list of trackers.
May that be the problem? And how can I verify if the tracking code is loaded anyways?