Job description
I have one site that has been collecting data in google Analytics for years. Yes it is added using Google Tag Manager.
I tried to do a migration to GA4, added a new tag in GTM but after a few days still analytics for property in GA4 are empty.
Please help me to get GA4 up and running with the already existing GTM tag.
Only help via desktop sharing (TeamViewer, Zoom, Google Meet) comes into play.