I've been waiting for a WEEK!
I searched in the FAQ question in the Pokemon page and it says:
"We have confirmed via the PGL development team that any use of external devices such as the Action Replay, used to modify Game Data, can cause wide ranging problems with Game Sync, including, but not limited to, inability to receive a Game Sync ID, extended "Out of Energy" messages that persist beyond 24 hours and Wi-Fi error codes."
I have NOT used such a thing! I just can't seem to be able to put a poke so sleep. It's getting annoying!
Does any one you know how to fix this?