Scheduled Calendar events prior to 2018 do not show on my Samsung Galaxy S21 + Ultra 5G. Birthdays and holidays remain but any scheduled event are mysteriously gone. However, when I look up the events in my Google Calendar, on my computer the events are there. It's like after a certain period of time the events are deleted from the phone. I can't even search it on phone yet the events are on my Google Calendar on my computer. How do I make sure all past events remain on my phone calendar (Version 12.1.00.45000)?