Older versions of Glyphs

Hi There, I’ve purchased a license for Glyphs3 but it’s not running well on my macOS Sierra 10.12.6. Any chance I can get the glyphs2 version but use the license for Glyphs3 ?
Thank you.

Glyphs 3 should run as good as Glyphs 2 in 10.12. Any particular problem?

And this should answer your question: Older versions of Glyphs | Glyphs