That message means the android version has not been released yet. It will be out in some days, don't worry.
Android version usually takes some extra day after the release of the other versions.
Re: Catch Celebi - The Chrono Traveler [Celebi Quest Part 1+2+3+Final)]
<r><QUOTE author="Vaati"><s> </e></QUOTE>
You need to catch all kanto and johto pokemon, except for legendaries, of which you need seen data.</r>
Porygon -> cinnabar island lab, after beating kanto elite four.
You can't catch legendaries, you just need to fight them. You'll be able to catch mew aftr 351h in game and after a quest and being kanto eand johto champion.
As already said thousand times, the adroid version is released some days later than the other versions. That message you have means the android version is not ready yet.
So, as I am doing now, just wait.
I evolved my pokemon and, without ms, I had my team lvl 65-70 with the 8 badges in Kanto. It's pretty impossible for you to have reached the elite four with lvl 55 pokemon.
A majog guild update is expected for the future, no ETA. Honestly I'd like to make the guild to have a meaning, because currently the guilds are only social.
It would be nice, but this has been suggested several times and at the moment it is something which is not possible to implement right now.
Just check the forum.