Errrrrr I got that too as soon as the countdown was over but I had to leave straight for work so I was bummed that I couldn't give it another go. Trying again now that I am home.
EDIT: So on the cookie thing I hit the button to make sure it says chrome, then just hit the account login button like normal. I also unchecked the boxes that said "check and skip scores if they will review before sending" and "skip/reject scores being sent over the max possible score". After doing that, I didn't get the "starting score send process..." anymore and it went straight to the countdown. I will edit again if it sends successfully.