Mendix studio pro is free & mendix provide free app node / account with limited functionality.
To leverage full mendix cloud platform you have to buy mendix node license.
Studio Pro is free and part of Mendix Free Edition. What limitation are you running into?
If you need to use Studio Pro on a Mac, you need to install something like Parallels that is capable of running Windows. Mendix won’t work on M1 based Macs at the moment as it only supports Intel architecture.
Hope this helps.