Hi, I'm having a very similar issue at the moment, but with a third party domain provider. My transfer to Squarespace seems to have failed, but WhoIs says that Squarespace owns the domain. Same thing with the "clienttransferprohibited" status. It's so frustrating. Sorry I can't help you - but would love to know how to sort this. Squarespace just say their Engineering Team is looking at it, but it's been a month now.