@Max Tsukino, @mich40, @bigwave,
I sent an email to customer service, and I got a positive reply in just a few hours:
We're sorry the 2019 gift subscription was not available. We understand you wish to switch the gift included with your membership. We're happy to help! We're going to see if the gift can be changed to the INNOCENCE + EXPERIENCE LIVE, 2015 & 2018, and we'll be in touch with you soon, but please note it may be 5-7 business days for a response.
(Thanks for your help too, and your patience. It looks like things will be fixed up for me. This was not