1) Is your PC connected to the internet?
To activate a license, your device needs to be connected to the internet.
Check the internet connection of your Mac device.
2) Is the Company Code or Authentication Code which you entered correct?
If the Company Code or Authentication Code is incorrect, you cannot activate it.
Check your Company Code and Authentication Code again.
3) Do you have enough licenses?
You cannot activate this product for more instances than the number of licenses.
Contact your administrator or help desk about the number of licenses.
4) Confirm your setting of Safari.
You cannot activate this product if your setting of Safari is not accepted Cookies.
Please choose [Settings]-[Safari]-[Accept Cookies]-[Always] temporarily.