10
days ago
Can't you open it by tapping on one of the 10 items in [Window] → [Material] → tapping on any of them (whichever you choose, the material palette will open)?
Once open, open a folder in the material palette that is easy for you to understand → In the layer palette, select the folder that contains all the layers → Drag it onto the material palette
If you can't operate the materials, as mentioned in the previous answer, it is possible that you are in the middle of another operation and the operation setting window is hidden off-screen.
It may be a different problem, but if that's the case, there may be no way to save it.
If you don't kill the task, what you've drawn (unless there's an accident) should remain as it is, so please contact support.
https://support.clip-studio.com/ja-jp/contact