Problem with callendar

[loniu]

Hi,

I have the following issue in version 3.0.1. In the calendar there are some days in each month not available and I have no idea why. Can you help me to understand this,

[Eva]

On each screen you can only click the days of the displayed month. The days of the previous and/or next month may be displayed for reference, but aren't clickable.
However, you can just go to the next or previous month using the arrows on the top left and right.