It appears that your username/password in the Connect Daily Settings screen of WordPress are incorrect.
If you blank out the username/password in the settings screen and save changes, does the plugin display events as expected?
If so, go to the calendar login screen, and use the mail password feature to reset your password. After you reset the password in Connect Daily, go to WordPress and enter the Username/Password if you want. You only have to have the calendar username and password in WordPress if you want to enable single-signon login, or if you want to display calendars that are not publicly visible.