If you are having problems with Calendar Widget+, try these steps below.
1.Verify permission to access your Calendar.
Press the Home Button and tap in settings.
Find and tap in Calendar Widget+.
Allow Calendar Widget+ to access your Calendar, as show in this picture.
2. Try to remove and add the widget.
Pull down the notification center and tap in Edit.
Remove Calendar by sliding to the left and add again touch in +.
If you are still with problems, send a email to [email protected] or use the contact form