My window sticker appeared to update when it was loaded on the trailer at the rail yard for delivery, then it updated when the truck was under trailer, and lastly when it left the rail yard this morning. It just arrived at the dealership!
Check out this thread for ideas from others as to the mods they are doing, they usually share the vendors they used.
https://www.bronco6g.com/forum/threads/what-did-you-do-to-with-your-bronco-today-%F0%9F%91%A8%F0%9F%8F%BB%E2%80%8D%F0%9F%94%A7%F0%9F%A7%B0%F0%9F%9A%BF%F0%9F%9B%A0.18089/
Have you checked the back door link:
Back door link (replace the eight (8) Xs at end of link with your eight (8) digit order/reservation code)
https://www.ford.com/buy/manage.html?reservationId=XXXXXXXX