Calendar and event popup boxes are clipped on the left

Have just installed and having problems with width.
See this URL: https://bcmoaa.org/chapter-info/event-calendar/

The first day of the week is missing and if one selects the event on 8-SEP the left side is clipped and missing.

Looks like a great plugin except for issues above.

Also how do I insert a mini calendar in the sidebar like t he calendar shown n the Home page: https://bcmoaa.org/

Thanks for the help – Ken