That's not true at all...?

According to staff:

" Hello,

In regards to edo tensei tag, ETR Madara does not have it in our version. The CN version of the game received an update after his release where it was added, but we have not received this update. It's possible we might get this update in the future.

In regards to the skills not working, the devs are aware of these issues and are currently working to fix them. At present there's no ETA on when a fix will happen, but hopefully it will be soon. We're sorry for the inconvenience, but thanks for bearing with us!"