Fatuncleben

I there, im blocked in the jirachi quest. I filled every conditions to complete the quest : 211 evolved poke, seen all johto, kanto, hoenn poke, captured mew and celebi and the quest (fight latios latias, groudon et kyogre) but i'm blocked at the magical stone (on the moon). Maybe its because i didnt spend enough time in hoenn but its impossible to chech (when i talk to the professor i only precise my whole game time)... If someone could help me it would be awesome ty in advance