Sure, we wanted to use Google Tag Manager, to load their javascript, because they already lied about it being async. So we’d use GTM to avoid them blocking our order confirmation page, when they had issues. So we asked if that would be an issue. It would not, their product worked well with Google products. It did not work, it completely failed to pick up the correct dom elements, it had never been tested with gtm. Again they also promised that they’d more to a real HA setup, but the never did.

Oh I forgot. They claimed that their solution was custom made, tailored to the need of their business and the business of their customers. When we asked for a few tweaks, to make implementation easier it turned out to not be true. It was in fact an off the shelf solution and they had no influence on the development. We only found out because some of the Javascript revealed the real authors.