I tried installing Robin from the installer on Windows and included the Visual Studio Templates for VS 2019 during installation.
Everything went OK and the Templates seemed to install as well. However when starting VS 2019 then I cannot see/find the Robin Templates.
Is there something I am missing or is this a known issue?
After the installation I went to the Robin install folder and manually executed the RobinTemplates.vsix file and installed the templates again and now they are available.
I think the problem was that the Robin installer required Admin rights so the templates were installed for my Admin user and not my local user (as the templates is installed in AppData for the current user)
So I solved the issue myself, but I am leaving the topic open for others to use if they have the same problem.