The Ask Popo skill does work it just takes a while after to use. This might be the same with skills that have a charge time because the same thing happens with Kamehameha, there's just a long delay after it's charged.
Uhmm after you try to register your pet egg it crashes your game.
Quest items cannot be picked up.(i'm sure this has been stated)
There's a missing NPC for one of the quests around the beach.
Time Rift quest didn't work. Never entered the portal.