It could be that the platform has certain restrictions or requirements that you haven't met. For example, you might need to have a certain level of membership or follow specific formatting rules.
Sometimes, it might be because the website or app is undergoing maintenance. Or, it could be a problem with your internet connection. You could try again later or check the platform's help section for more info.
It could be that you haven't met the specific requirements or conditions needed to add a story. For example, maybe you need to have a certain level of authorization or complete some preliminary steps first.
It could be that the platform has certain restrictions in place, or you might not have the necessary permissions. Sometimes, it could also be a format or content-related issue.