I've had Shopify Lite for two years and have been using the Buy Button on my wordpress site with no problems.
However, the past month I've been getting a lot of customers who are having this issue.
After completing the checkout process, the Digital Downloads Link is taking them to a login page like this:
They can still download the PDF on the checkout page itself after ordering, but now when they get the email with the download link it just takes them to the page above.
Any help with how to solve this problem would be appreciated!