Issue with Installing MainStage 3 on macOS Monterey

Hi,

I recently purchased a MacBook Pro that came with macOS Monterey pre-installed. I would like to install MainStage 3, but when I try to download the program I previously purchased, I am unable to do so because it requires macOS 14.4.

I found some information on the website that MainStage works on systems later than macOS 12.3. Could you please guide me on how I can install the program on my current system?

Thank you for your help.

Best regards,