I tried to sync a pivot calendar report via link in my Hotel management system, events are added in the relative DB but they do not show in the software calendar. If I check the DB I see NULL in start-time and end-time.
But when I try to sync a calendar from another service, for example Airbnb, everything is fine and in database I see normal timestamps.
I noticed a difference between the two calendars .ics files:
The one from Ruko show this date format
DTSTART:20220829T000000
DTEND:20220902T000000
The one from Airbnb:
DTEND;VALUE=DATE:20211009
DTSTART;VALUE=DATE:20211008
