After purchasing AI Image Upscaler, there are 2 ways to get the installation:
1. If you have installed Nero Start before and have logged in it, please just set Nero AI Image Upscaler as the default product in Nero Start:

or:

Then click the Install button of Nero AI Image Upscaler:

2. If you havn't installed Nero Start, please download the installation package of Nero AI Image Upscaler from the link below:
Nero AI Image Upscaler 365 subscription version:
https://www.nero.com/download.php?id=naiu_full_installer
Nero AI Image Upscaler permanent version: