Matomo via Google Tag Manager Using Complianz for Content

I’ve just added Matomo script into GTM to fire on all functional cookie events set via Complianz. Was hard coded into the website theme using the cookieless browsing implementation.

But now I am seeing a reduction in visits/pageviews and bounce rate go from 35% to 75%

The Matomo script is firing OK across all pages and some events are working fine.

Complianz gave us a little script to remember consent - but I have no idea where to even start debugging this to ensure all data is being processed correctly by Matomo.

Any help appreciated.