I started a Pathfinder Rulebook subscription on 01/27/2020, order number 10911840, but I do not see the Gamemastery Guide in my side cart or have gotten an order confirmation for it. Please let me know how I can help clear this up.
I have set up your GM Guide to ship out and you should see a confirmation email for that order shortly. Your subscription should spawn correctly moving forward. Thanks for your patience!