BekaBeriashvili: tfishell and argamasa, thank you both for your replies.
I opened that link and all my subscription boxes are ticked, I also checked my yahoo mail and it also shows me I'm subscribed to gog as usual, spam folder is empty. I for example got the mail from gog which informed me it is now possible to edit reviews and also I get their promo e-mails when a game which I have wishlisted gets a discount, BUT the last time I received a discount code from them was 28th of August. I will continue to be their client, it just hurts a little if I'm not on their list anymore :D could be yahoo issue too, I will unsibscribe and add my another e-mail to check that
Contact Support if you can't figure it out, maybe they have some ideas.