This forum is "unofficial".
See this post:viewtopic.php?f=30&t=3
Not being able to see replays is common directly after server updates. But recent replays should be visible. I see mine at least.
There's a bug though that lets battles be displayed incorrectly when droidekas are involved. But even those replays are displayed.
You should contact Disney support about the error and/or write in the official forum (can also be accessed via the game). I don't think that the developers read here regularly.