Are you able to see and beacon to Analytics being fired on the mobile site via the debugger or network tab of the browser console? If so, can you post screenshot of the beacons? Also, is there a URL I can visit to see if I am able to view the beacons being sent?
If I enter " m.statistiques.public.lu/fr" into the browser, I am seeing an Analytics beacon being sent. However, the beacon is fairly empty.
Is there a rule within your DTM company that you'd expect to fire when on this page?