I would suggest trying to turn them off via the npc in the grand hall and back on.
EDIT: Gearen lab my bad. This is what happens when you play reborn too much.
Patch your game and use a backup save, you should be able to continue then.
Continue where you left off with the story and it should be fixed. You have to go to the left room in the rose theatre.
You probably hit the level cap. (Pokemon don't gain exp) Its a feature implemented in V10, you will be able to gain exp normally once you get the next badge.
Pick your starter, don't leave the room and go to the pokemon menu press enter and you'll see a "change starter" option (below "summary").
I haven't tried it for rejuvenation but it should work the same as reborn
@BootyJuiceJenkins
Savefiles are located either here:
Cdrive/users/yourname/savedgames/Pokemon Reborn
Or directly in the Pokemon Reborn game folder, check where yours is located and put the new savefile there.
Rejuvenation's PBS file should work for Desolation as well so give that a try. You can download it here:
https://mega.nz/#!xIRSSZDA!EkcnGUTt_azipEZHYBv8VLEbYhi7LEGgpNS1dU12PkI
The PBS folder contains all the data for making a rpgxp game and isnt needed for normal play. PBS is generally used by developers so you shouldn't really worry about it.
Download v10 and the patch 2, then copy the files in the patch directly to the v10 file, replace them ( do not merge them) and you should be set.
EDIT: Ninja'd