The plugin is amazing, just like its creator!
I had many questions about the plugin, and the author answered all of them and even fixed some issues.

I also want to give a tip to other players:
When creating an animation, you need to select the entire animation area with the wand, not just the top and bottom corners. You actually have to click through every single block. But don’t worry, you only need to do this once — after that, you can just change the blocks and save with /mb frame add.

Thanks a lot for the plugin!