That happened to me too. I checked and found that the regular showdown sever wasn't doing anything either. After the regular server returned to normal, so did mine. I went into data and made changes to pokedex.js, and learnsets.js. When I entered my local server I didn't see the stat changes I had made in the team builder, and the moves I had added were still labeled illegal. For a moment I thought nothing had happened. Then I tried searching for a battle with one of the new moves I added, and one that was still illegal. The new move was accepted, and the other wasn't. Even though it doesn't show, the changes I had made to the moveset were effective, and I'd assume so for the stat changes as well. Is it possible to make it so that the added moves are shown as legal and the stat changes show in the team builder? Also, I'd like to test the changes I've made for balance. Is it possible to battle against myself, or must someone else do it with me? If I must test it with someone else, what are the necessary steps?