Android to iOS transfer

After several attempts the Android said the transfer was complete. However, the iPhone says, "unable to migrate, Try again later."

What to do now ?

I tried to start the whole process AGAIN (do I REALLY need at iPhone, argh !) but, the Android cannot connect to the iPhone with this unable to migrate message up. (Seriously, the Android wasn't THAT bad was it ? Grrr)

SOS