Unfortunately for many, the “Add Yours” button doesn’t always work. For some, they can’t add their own stories to the chain. For others, it just won’t post properly as a story. There are several reasons why it might not be working and just as many potential solutions.
The first and most obvious is that you may need to update your Instagram app. That’s as simple as diving into your app store of choice and seeing if there’s an update available for Instagram that you can install.