Cant use Create Voki page

I am using a MacBook OS X 10.9.5 and when I go to the create a Voki page the page is dominated by the 1. Start Customizing your avatar pop up box and the Sitepal add on the right of the page leaches across almost half of the page. I cannot remove the pop up box and all of the buttons are inaccessible behind it. I really hope someone can help, I was hoping to impress our staff by using Voki in our staff meeting tomorrow!