Close the application and go back to Mod Management. It usually will show up after restarting PokeMMO. After Click on the box so theres a check mark then click Save and it will say the app needs to restart and you should be good after.
Hopefully some day but definitely won't be happening anytime soon™ since platinum/sinnoh is next in line. But don't give up hope. We all need some bug contests in our lives.