Howdy Martin,
I would love to assist here.
Are you trying to do add the date for a recurring event? The instructions George sent you make it possible to add the date for the first event in the series. You can even do this by using a snippet like this, rather than directly modifying the files as he outlined:
https://gist.github.com/elimn/9352efba6accd9dc21a1
However, it is unfortunately not possible to add the date for the event the customer was viewing when they clicked add to cart.If you have ever added a ticket to a recurring event, you have probably noticed the little message that says tickets do not yet fully support recurring events. This is a side effect of that. Basically all tickets added to a recurring event are stored with the same date, the start date of the first event in the series. Thus, when you attempt to get the date for a ticket, it will always return the date for the first event in the series rather than the date your customer was looking at.
Does that sound like the issue you’re facing?
Cheers!
– Brook