Suggestion #14425

Book Signing is not allowed why?

Well i wanted to sell a shulker pack on ah and i wanted to put a messege to whoever buys it
You know....
In real life when you buy a package you find a massege from the company contain a thanks massege and a list for the prices of the items the pack contains to inc the trust
I exactly wanted to do that but when i tried to use the quile book it wasnt allowed to right in it or sign it soooooooooo can you fix this :>