Glyphs 3 - upgrade for free

Hello. I have bought Glyphs 2 on September 9, that means I can download Glyphs3 for free. Unfortunately, I have never received my free upgrade cupon on my e-mail registered when I purchased Glyhps 2. (I have already checked my spam folder). How can I get my free cupon?
Thank you!!

Please send an email to office at this domain.

Also, mentioned in the Important section at the end of the Upgrading to Glyphs 3 page.