This is the most ridiculous issue that should never happen! The Photo V2 msix installation package will not install using the app installer from Microsoft. I'm using the latest Win 11 version so that should not be the issue. I can install V2 using Powershell command lines but it installs under the user's app data folders and not in the Program File directory as does V1. We should have the freedom to determine where the programs we purchase are installed. The powershell command line to install V2 is
add-apppackage -path "<your full path to this file>\affinity-photo-2.0.0.msix" of course without the <>.