I haven't checked my mail in two days but it appears I received a Home invite on 11/21.
Today is 11/23 and I'm trying to enter in the code but it doesn't work.
Are the codes timed and must be entered the evening you receive them?
I think it may be fake....
It says it was re-sent from this address:
But that it was from: PlayStation-Underground@playstation.sony.com