RexAtmos installer not worlking

Apologies in advance if I'm posting in the wrong place.

The problem: I recently purchased ReX Atmos but can't seem to install it. When I launch it (rexatmoscore_setup.msi), it shuts down abruptly after I select (or deselect) .NET 7.0. I've reviewed their installation recommendations (UAC setting which I don't understand very well but in my setup is in the standard setting), and everything seems fine. I tried running it from the Command Prompt with admin privileges, but it still won't install. I've also contacted support but haven't received a reply yet.

Any help is appreciated.

(Win 11 latest release)