Can’t access toolbar in edit pages on a MAC

Hi I currently have a blog http://www.mealsbymel.com.au and have added wp-member to it. I can access and edit everything fine on my PC, however my client who is on a MAC can’t access any of the edit page functions. There is no menu bar with options for WYSIWYG and if you can’t click on any options such as ‘screen options’ insert photo / media etc.

Can’t find anything to help me either… can anyone help me?

Regards,
Carly