Hi Tony,
I had another look: Ruthin is for sure selected in the JEvents configuration. However, when I change the template to another one and clear the cache, I do not see a difference in the way the calendar looks like.
The event (Easter holidays) has start date 8/4 and end date 22/4/2019 (no times set)
The setting to display a multi-day event on each day is set to no and there's no repetition scheme set.
This results in 1 event on the first day of the event (have a look to the URL which points to April 2019).
When I change the setting for the display of multi-day events on each day to yes, I end up with a 15 events, one on each day of the period. Have a look at Feb 2019 where you see an event for each day of the "Krokusvakantie".
As a test, I verified the settings of the summer holidays, which I know were 100% correct to display the vacation period as a single event, multi-spanning the entire Juli and August 2018 months and I don't see a difference in regards to the settings, but I also see that the multi-span has disappeared over there...
I'm not sure what has happened or what is going on...
I also notice other small details that changed (eg. in the calendar module in the footer, only day and event was listed - yesterday also start and end time appeared (which I already changed)).
Do you have any ideas where to look at ?
Thanks,
Mario