It could be that the music is copyrighted and using it without authorization would be illegal. Or, the platform where you're creating your story has certain restrictions on music usage.
Maybe it's because of copyright issues. If the music isn't in the public domain or you don't have the right permissions, you can't use it.
Maybe it's due to copyright issues. Some music is protected and using it without permission is not allowed.
Another possibility is that the music you want to use isn't available in Instagram's music library. Instagram has a limited selection of music that can be used in stories. Try choosing from the available options instead.
Maybe it's because of copyright issues. Some music is protected and using it without permission could get you in trouble.
Maybe it's due to copyright issues. Some music has strict usage restrictions.
It could be that the platform you're using doesn't have the necessary licenses for that music. Or, the music might not be compatible with the story format for technical reasons.
Maybe it's due to copyright issues. Some music might not be licensed for use on Insta Story.
Maybe it's because of copyright issues. Using music without the proper rights could get you in legal trouble.
It could be that the platform you're using has specific rules and restrictions on music usage in stories. They might have licensing agreements that limit which music is available.
Maybe there's a technical glitch or your device doesn't support it. Try restarting and see if that helps.