I and many others had this problem in 2022. The fix was to lower the screen resolution down to 1920x1080 or even less, e.g., 1280x1024. Others said that activation "worked" if they set scaling to 100%. (Scaling defaults to more than this on smaller high-resolution displays, e.g., 200% on my Surface Pro tablet). Some also had to paste their key into a pop-up window that they couldn't see.
This was a horrible Intuit TurboTax BUG in their 2021 installer, and I am VERY disappointed if it's still here in TurboTax 2022.
