UPDATE: This appears to be resolved.
Today I noticed the window stickers aren't working. On the GM site that generates them, all VINs get a result of "not found", even if the window sticker was available previously. Issues with that site are not uncommon and are completely out of our control. All we can do is wait it out.
And if anyone isn't aware, no 2026 Z06 or ZR1 window stickers have been released because of the recall for a risk of fire while refueling the car (the cars aren't being released to customers). I'm not sure why no 2026 E-Ray window stickers have been made available.