I'm running a website at [login to view URL], which has a third party reservation widget on it.
We would like to set up, for Google Ads, conversion tracking. When someone makes a definitive reservation, they click a button and we would like to track that conversion in Google Ads ánd Google Analytics.
The reservation widget is called Resengo, which has a support page on this subject here (in Dutch): [login to view URL]
Yet, we can't figure this out completely with this guide. We already have a Google Tag manager account for the site.