I am listing on Amazon, I am not getting the listing, I don't know why I am feeling Jesus. When I list, the listing should be activated after 24 hours, but the listing is not showing on my store.

Hello, I am a new seller on Amazon. I am trying to list my first product but I don't get the (I am listing a product not sold on Amazon) option. I also can not apply for GTIN. Please help me>

I listed my product originally without an expiration date. I am attempting to list again with the same product but with an expiration date. Can you help me? The option to enter an expiration date only seems to appear on the initial listing of the product.