Swift IOS App Address Save Issue

I have an Ecommerce IOS app built on swift. On checkout when user adds shipping address, it does not save, however when user adds an address from my account section, it does save.

I need a developer to check why it is working on one place but not working on another place and then fix it.

Developer will need to create test build and then help deploying to apple store.

Developer will need to push their code to github for code review.