I just purchased Ambition Pro and installed it into my WordPress test site. I already had the Free Version of Ambition running on that site. I activated Ambition Pro and then clicked on Customize. The page switches view but never loads the menu of Customize topics (I waited 10 minutes) . The title on the Browser tab says “Customize Loading”. When I switch back to any of the other themes that are on that site, I get the same problem. Somehow installing Ambition Pro broke the customization. How can I fix this?