Scheduler and Google Cal Set up

Hi there,
we have a really bad time setting up Scheduler and Google Cal. We have read all guides and forum posts but we cannot make it work.
Is there any other guide for this? More straightforward and up to date? I do not know what we are missing here.

*Our main DHTMLX account is
Thanks in advance, Kostas

can you pls give more details on what you’re implementing and what exactly the problem is?