I know this is a very old post but I see you were able to help other people, can you please help me. I just paid for clip studio and its asking for my serial number. This may sound redundant but I'm not sure of how to find it. I do know about the customer support page, I just wanna say before I start explaining. I own a copy of Clip Studio Paint EX which I currently.
My main work pc just broke, so I can't get my serial number. I don't quite understand this: [Japanese version] Log in to CLIP STUDIO account, open My page, and open 'Product serial number' on the left side.
Serial Numbers and Model Numbers are found in different locations on your device depending on the product. For Wacom Intuos Pro pen tablets, the model number is located on the bottom of the tablet, next to the text reading “Model”. The serial number is located further down, next to the text reading 'Serial Number': For Intuos pen tablets, the cover on the bottom of the tablet must be removed.
Once removed you will see where the optional wireless kit can be installed, the spare nibs, as well as the model number and the serial number, beneath the barcode: For Wacom Cintiq Pro pen displays, when facing the rear of the display, the model number and serial number will be located beneath the left support leg. The model number is next to the text reading 'Model' and the serial number is next to the text reading 'S/N': For Wacom MobileStudio Pro pen computers, the serial number is located beneath the center USB-C port on the side of the device, between the air vent. The model number is on the back of the device, below the Wacom name: For Intuos4, Intuos5, and Intuos Pro pen tablets, the model number is listed next to the text reading 'Model.' The serial number is located on the bottom of the tablet, beneath the barcode: For Cintiq 27QHD pen displays, the panel in the center of the back of the display, covering display connections, must be removed to view the model number and serial number. The model number is next to the text reading “Model” and the serial number next to the text reading 'S/N': For Cintiq 24HD, Cintiq22HD, and Cintiq 13HD pen displays, the model number and serial number are located on the back of the device, above and below the barcode.