Dropbox integration

Can you please provide further information regarding your concern? Are you asking how to integrate your form with dropbox? To do so, please follow this guide: Upload to Dropbox with JotForm.

If you are referring to a different issue about the dropbox integration, please let us know so we can better assist you.

Thank you for getting back to me. I didn't realise that a query was
actually raised. However, since you ask, I am having difficulties with the
Dropbox integration. When I click on the "authenticate" button, it simply
spins and does not give me any prompt to log into the relevant Dropbox
account.
Thanks for your assistance.
Brenda Smith
webmaster@ozquiltnetwork.org.au
...

I cloned your form and tried to integrate it with my dropbox. I was able to integrate the form successfully. I cannot seem to replicate your issue. 

When you click the Authenticate button, a pop-up window should appear on your screen. If the pop-up does not appear, I would suggest clearing your form cache and your browser cache to resolve the issue. Here are a couple of guides that can help:

How to Clear Your Form Cache?

How to Clear Your Browser Cache?

If the issue persists, please let us know.
Regards.