@Jon3511 The wifi password is something that a guest would need only upon arrival at your property. I'm failing to understand the extent to which you are going to change this. When a guest walks in your door and sees the information at your property, there wouldn't be any need to refer back to the AirBnB website, where you are trying to change this. They don't need it prior to arrival, so why spend the time?
I have my wifi password written in my house binder, which serves the purpose of making them look at the binder, so win-win in my book.
I understand that the AirBnB website can be glitchy and frustrating, but you've got an easy solution here. Of all the things they DO need to know prior to arrival, the wifi password isn't one of them.
Good luck.