After updating the primary email address for the account, the email address used to subscribe to the newsletter was not updated accordingly.

After updating my primary email address, I noticed that I wasn’t receiving the newsletter I’m subscribed to. When I checked my subscription settings, I saw that the email address on file for the newsletter was still the old one, and I couldn’t change it. I’d like to update the newsletter’s email address to my current primary email address. How can I do this? (The screenshot shows my current primary email address and the email address on file for the newsletter—they don’t match, and I can’t change the one on file.)