It's impossible in the module to display more than 20 elements at a time! And the "display all events" button seems to be not working... I wish display 100 events at the same time and if not that the "display all"...is working well :) Thank you!
20 eventsis the limit. We advice you to use a list of events menu link in order to display 100 events.
The URLdisplay all event must be defined in the module parameters.