@Filip Hi. Sigh, I just consulted with a dev and he tells me that the framework that is used to build the software was updated for this version. So now the requirement seems to be 10.12 and above.
I’m truly sorry, we really have no control over it since Apple is the one that supplies the compiler to the Qt company, that are in turn the providers of the technology used to build the software itself.
I’ll ask them to update the requirements on the page, and see if there’s any way that we can have Pencil2D working for older versions, but regrettably for now I can only direct you to a blog post we have on alternate animation software to use instead of Pencil2D
The other option would be for you to compile the software yourself using an older version of Qt for your specific macOS distribution, we normally don’t recommend this only because you need to be knowledgeable with computers, but if you can find someone to help you with that, we do have proper guides for you to peruse in such case:
developer macOS guide: https://www.pencil2d.org/pencil-docs/docs/build__mac_8md_source.html
pencil2d source code: github.com/pencil2d/pencil/
guide for cloning a repository: https://help.github.com/en/articles/cloning-a-repository
easy to use IDE to manage git code repositories http://fork.dev