Trouble moving domain name form 7.0 to 7.1

Hello, I've been using squarespace 7.0 for a few years and my domain is registered through SS. I've created a new site in 7.1, paid for the plan and am now trying to move the domain over.

Everything seems to work as it should until I reach this confirm pop-up. If I click 'Confrim' the pop up disappears but then reappears straight away and I can't get past it. Coming away from the page seems to cancel the process. Anybody know what's up? I've tried in three different browsers and all the same thing.
 

Your best bet is to get in touch with Squarespace customer support directly for this: 

https://support.squarespace.com/hc/en-us/requests/new#choose-topic