When entering my serial number into Clip Studio Paint I get the message "Please enter your 12- or 13-character activation code."
If you get the message "Please enter your 12- or 13-character activation code." when entering your serial number into Clip Studio Paint, you may have entered it into the wrong place.
Please refer to the following to confirm the proper place to enter the code.
Where to enter your serial number
A serial number for the One-time purchase download version of Clip Studio Paint can be entered via [Getting Started with Clip Studio Paint] under [License Options] in the Clip Studio menu.
For detailed instructions, please refer to the following FAQ.
What about [Enter Activation Code]?
[Enter Activation Code], which appears in the Clip Studio menu, is not the correct location to enter your serial number.
For more information about activation codes, please see the following FAQ.