Gravity Forms Dropbox Add-On v1.1 is now available via automatic update and the Add-On Downloads area of the support site.
This is a major maintenance release and includes updates to the initial setup process and Dropbox API interaction.
The Dropbox Add-On now requires SSL to be installed on your web site in order to interact with the Dropbox API.
If you do not have an SSL certificate installed we recommend getting in touch with your web host. SSL is fast becoming a best practice no matter the type of web site and there are now free solutions that make them even more accessible.