don't lock up
I clicked the "review and pay" in my accountant's email. I filled in my credit card info. Then saw the "sign in to save your info" so I clicked "Create an Account". This gave me a popup saying asking for email and phone. I typed in my email and it said that ID was taken. Remembering I already have an account, I click on the "sign in" link on that create form. I signed in. It gave me a note box at the top of the page telling me I was singed in should click the next button. The screen was then locked. I couldn't scroll down to the next button. I closed it. Clicked the "review and pay" link in the email, clicked sign in first, then input credit card info. All worked then.