My payment method, a credit card, was declined. I added a new one and I received an email from Google Play on the 25th of September about my subscription having been renewed. It included the order number, the order date, my account email address, the item, my order number, "Dropbox Plus", and the amount that had been paid.
However, when I go to dropbox.com, log in and go to subscriptions It says my account is Dropbox Basic.
My Dropbox email address is [email removed as per Community Guidelines]