Why won't my Zygarde get into the Zygarde Cube?

Question

I clicked my 50% Zygarde to use the cube on, but it said that nothing happened. My 10% Zygarde goes in just fine. What could be the problem?

Answer 1

Your 50% Zygarde probably has the ability Power Construct, after you collected all the 95 cells and 5 cores and assembled them. Such a Zygarde cannot be reassembled with the Zygarde Cube. It can only change form out of battle (between 10% and 50%) and will go to 100% form in battle when its ability activates (HP reaches half).

Very unfortunately, (if you want the cells and cores back) you will have to completely disassemble your Zygarde (at the Zygarde Lab on Route 16), forgoing all the IVs, EVs and its nature.