Recurring Event - Registration for the parent event don´t work

I have created a recurring event (weekly recurring) - registration for every child event works fine but not for the parent event (a blank page appears)!
Does anyone have an idea what I could have done wrong?

To be honest, I have no clue why it doesn't work. Technical, recurring event is the same with standard event, so it should work

You can submit a support ticket sending us super admin account and link to the page which we can see the error. We are going to check to see why it happens and get it sorted

Regards,

Tuan