[Plugin: WordPress Form Manager] Calendar is not synced with event dates

When we have events that go from the 30th-1st of the next month the event shows up every 1st of every month on the Calendar. Its a bug that our designer refuses to admit is a flaw. And tells us to submit the event individually for every day it happens. Does not make any since.

http://wordpress.org/extend/plugins/wordpress-form-manager/