Hi Raphael,
Thanks very much for the clarification! On our end, we do not handle the tracking via AdWords, so if you have built the ad without issue in GWD (more info here on using
Tap Area), then everything should be tracking properly once uploaded to AdWords. If it is not, then you definitely need to reach out to AdWords and inquire.
I noticed the link you provided mentioned DCM and on this page, there is a tutorial video (expand the "Use Gooble Web Designer to code clickTag for DCM creatives) which provides a walkthrough, perhaps that will help:
https://support.google.com/dcm/answer/6055507#traffickingthx
jaz
Program Manager, GWD