Maybe the authors haven't given permission or there could be copyright issues.
Technical problems on the platform can also lead to stories being unavailable for reading. This could include glitches in the system, server problems, or issues with the database that stores the stories. Sometimes, if the story contains inappropriate or offensive content, the platform may remove it to maintain a certain standard.
It could be a problem with the server. Sometimes servers go down or have maintenance issues.
It's hard to say for sure. Maybe the format of your fanfiction was incorrect or there was a problem with the hosting. Another possibility is that there was a complaint about it and it was temporarily removed for investigation.
Maybe they haven't been published yet or there are copyright issues preventing their availability.
Maybe they violated some rules or policies. That could be a reason for their unavailability.
Maybe they violated certain rules or copyrights.
It could be that the show didn't get enough funding to make the story available. Or, there might be legal disputes that prevent its release.
There are several reasons. Sometimes it's because of licensing restrictions or the platform not having the necessary agreements with the music labels. Also, it might be that the songs don't fit the platform's content policies.
It could be that the stories haven't been properly authorized for certain platforms or there are technical glitches preventing their availability.
Maybe it's due to licensing issues. Some platforms might not have the rights to show certain stories.