Tattoo Smart's brush downloads only work using the "Safari" browser.
If you are using an alternate browser, such as Google Chrome, please close your browser and launch Safari.
Then follow the steps in the installation video that was included with your order.
It is also possible that you have accidentally purchased "Clip Studio Paint" brushes which only work on computers, not iPads. If this is the case, don't worry, we will refund your purchase. Just email firstname.lastname@example.org and include your name, order number, and a brief description of the problem.