Please answer

Please respond to my Pro issue, nr. 8789792. It’s really urgent! Question:
Course is set to start at a fixed date: October 27th. Lessons are set to drip each week, with the first lesson to start at the course’s start date. But, although lessons are not yet accessible, my client already receives email notifications that lessons are available, starting purchase date; next notifications every week. Clicking the lesson link though shows that lessons are not accessible.

A Dutch expert suggests ‘When something goes wrong with planned actions, it is often related to using another time zone or date format, as is set in Settings – General. Developers test in standard English date format, but not with different date formats. “
We use Dutch date formats. Maybe this will help? Please!

The page I need help with: [log in to see the link]