@ herrkommandant

Then you have a different IMEI and yappari needs to register again. It would be too simple
But I read a post where someone used Nitdroid to register with the official client, then blocked the data connection and booted meamo with yappari again. It worked, but I don't know details, cause yappari still works for me.

@ shaz
but you mentioned, you used yappari in june for the first time. So you registered in june...and in june the world was still ok.