Resizing Calendar & Order of Calendars on Appt+

I've configured the Appointments+ plugin but I find the calendar to be very small...only half the width of the actual available column (2/3rds width of screen).

Also, instead of showing the current month's calendar at the top of the page, it shows the next months calendar with the current month at the bottom of the page, below the 'line of vision'

How can I fix these? It wasn't completely obvious to me when I looked at the css for the plug-in (so left it as it was).

Looking forward to getting this sorted.

Kind regards,
Renee

PS - You can see it here: http://www.sound-sanctuary.com/treatmentbookings