
Hi Sabrish,
Thank you for reaching out.
The AppSource link is working now. If you are facing any issue in AppSource in future please install this accelerator from Github.
AppSource: https://appsource.microsoft.com/en-us/product/dynamics-365/msnfp.msftnonprofitcommondatamodel
GitHub: https://github.com/microsoft/Industry-Accelerator-Nonprofit/releases