Hello,
I am trying to track a website with Matomo Tag Manager but I am facing an important issue. Let me explain the situation.
My website has an external cookie banner. When cookies are accepted, it sends an event “consent_cookie_manager” with a variable “DL - Matomo” set on “1”. If the user refuses cookies, then 'DL - Matomo" will be set on “0”. Of course, the Datalayer is dynamic based on the user’s consent, so if users refuse and then change their consent to accept all cookies, a second “consent_cookie_manager” will be sent and the “DL - matomo” variable will pass from “0” to “1”.
My configuration for the pageview :
- Matomo analytics pageview-based tag
- Trigger based on the event “consent_cookie_manager” when “DL - Matomo” is set on “1”.
- Tag set on “illimited” for the test
1/ When I try to set up an event or my pageview, my issue is the following :
- I land on the website for the first time, no DL event is sent while awaiting for user’s consent. So my pageview does not trigger. (Normal state)
- I accept the cookies, the datalayer “consent_cookie_manager” is sent and the “DL - Matomo” variable is set on “1” but Matomo does not see the datalayer that has been sent so my pageview is not triggering.
- The pageview is sent only when refreshing the page as the datalayer is present when the page loads.
Could you please help me to fix this ?
2 / The pageview does not trigger when updating consent :
- If I refuse the cookies, a first “consent_cookie_manager” is sent and the “DL - Matomo” is set on “0”
- I change my consent to set it on “true”
- A new datalayer “consent_cookie_manager” is sent and the “DL - Matomo” goes from “0” to “1” → this does not work because Matomo does only the first datalayer event and not the second
Could you please help me to fix this ?
Many thanks for your help 