I do not know how to register my license key.

There is no need to re-install a new licensed version of the software.
1

First Step

First, in order to ensure that there weren’t any mixups between “0″ and “O”, copy the entire license key, including the “-” (hyphen).

You can resend the license email on the My Account page.
2

Second Step

Next, under the help menu, go to “license” and push the “paste” button.

3

Third Step

Last, push the “apply” button and start the program.
If the authentication still fails after this process, please contact our Support Center.