Once you purchase the software, you will receive an email with your log in Information.
Click on Download.
You can find the file inside your "Downloads" folder.
Just double-click on the file and expand it .
Now, drag the Create Studio icon into Applications folder
After a couple of seconds, double click on Create Studio icon.
The following message will pop up:
(this warning from Apple is commonly shown for apps downloaded outside the AppStore)
Simply select "Open"
The software will then load and take you to the login page.
Use the login details sent to your email.
ENJOY CREATE STUDIO! :)