What version you exactly mean is unclear to me but the appstore versions of PizzaMario can be downloaded from the modeler. Start, click appstore, select one, download. If one of these are too old, search for a more recent version
In case you have a 2.x version project you need a 3.x version of the modeler to upgrade, after that you can upgrade from 3 to 4. Versions of the modeler can be downloaded from the support site (see releases) You need an account for that.