Why are events suddenly disappearing from my SGH T769 calendar?

[AC Question]

Events suddenly began disappearing from my SGH T769 calendar shortly after I entered them. If I enter them into my google calendar on my iMac, it sinks to my phone. When I enter them on my phone, the event disappears after a minute.

 

[B. Diddy]

Welcome to Android Central! Odd, someone else posted almost the same question, except for a different phone and different computer: http://forums.androidcentral.com/as...calendar-events-disappear-within-minutes.html

I'll ask you the same thing I asked the other person--are you certain the event you entered in the phone was associated with your Google account, or could it have been with the Phone account?

 

[esheffer]

Exactly same issue. Began 2 days ago. This was the only description I could find in a search describing my situation. It's worked without issue for 3years. 2 days ago, the event would disappear within a minute if entered from my phone. Entering on my computer works fine. The phone syncs with the google calendar no problem. But you can't enter an event on the phone app.

I have an HTC Glacier (myTouch 4G)