I tried to install Piwik Pro in Shopify Custom Pixel type installation (so that we can have it on the checkout) but Shopify is warning that there is recursivity in the base code.
Apart from these two solutions, it would be difficult to propose anything else. The only solution for now I see is to modify the files in .liquid so that they allow a deployment on the checkout page as this interferes with the method that we recommend using.
For security reasons (according to Shopify), it seems to be very difficult (not to say impossible) to modify the .liquid files for the checkout for most subscriptions nowadays…
Please advise when a workaround is available. I’d be more than happy to test it if need be ! I would rather have the choice to use Piwik Pro