Just do it... Don't use wondermail... Just beat bidoofs wish and receive challenge in the spinda's cafe. Pretty simple

You have to just keep doing missions and once you wake up one day, when you go to treasure town, they walk up to you and go like.... Luminious springs is different or something.

I don't know but I evolved in explorers of sky. I was a rioulu and I evolved to lucario and my shinx evolved to luxio then luxray...