Calendar drops past-months appointments

[Windows Central Question]

I'm running Windows 10 on my Samsung ATIV SE phone. About a year ago, the Calendar dropped (erased) all of my past calendar entries except for the last 2 weeks of the previous month. So, when the month, for example, changed to May, all entries for April - except the last 2 weeks of April - were erased (and everything for all months before April). Even if I go back to a previous month and now try to make an entry, the entry will not "stick" and disappears just as soon as it is entered. I can, however, add entries to months yet to come. For example, I can add entries for June when the current month is May. However, those June entries - except for the last 2 weeks - will be deleted when the month turns to July. I've been to the MS store and to the Samsung folks, but no joy.

 

[T Moore]

The phone calendar syncs from you account calendar.

Two weeks of past single-instance (non-recurring) events.
All future single-instance events.
All recurring events that have occurrences within the last two weeks or anytime in the future.

This can not be changed.

 

[xandros9]

I thought there used to be an option but I guess I'm mistaken.

 

[Jeep1962]

When you look at your calendar on your PC there are all your notes visible