I just bought an annual bundle for "Hub Protect & Remote Admin" for my first hub, and was trying to buy it for my second hub, but the "multi-hubs" code reports "Sorry, you cannot use this coupon because you don't have an active Hub Protect subscription for your account". Is there a separate code if you buy a bundle? I thought the second subscription would be "$19.99"?
That is correct. Please reboot the first hub, then try the second again, with same code. If that doesn't work, please send me a private message with your hub's MAC address and account email.
Also, a side note - both hubs were initially registered to the special "house" emails, before I moved them under my own personal email (by switching admins to it). Perhaps this screwed some things with the discount?