How to revert to a previous version of Gigapixel 7.x

My Gigapixel 7.4.4 is a complete disaster now. It applies Noise reduction even if I have that at 1, all models, so I get horrible skies, there are patches where heavy noise reduction is applied and other than not resulting in horrible destroyed images. i know this was not the case before. Is there a way to go back to version 7.2 for example. I want to keep trying older versions until I get the one that was working properly without applying NR . Where can I find a download to previous 7.x versions.

Thank you

v7.2.0

Mac: Download
Windows: Download

Thank you . I finally found how to revert back to a different version thinking I would find one where Noise reduction is not applied to the images when it is set to 1. Did not work. All the version apply NR and in the case of skies ruin all my landscape images. So I will no longer use this program until it respects noise of the image when NR is set to 1, or better an option to set to 0.

Right now this is not usable for selling print as a pro photographer unless I add later noise with photoshop to fix the uneven noise created in skies because of this bad implementation