Upfront Builder - cant get out of initial demo mode to edit

I have never used builder before - I downloaded it and the 'Luke and Sarah' theme. I have renamed that theme pickScotland2 and then tried to open it in builder - it loads, renders and then I get the 'demo' page but I cant get out of that page and the 'Next' button seems inactive.
I have enabled support access if you want a quick look.