Dropbox chooser error

Hi,

I have added the Dropbox chooser in our web application.

In the Dropbox app, I have added the domains we are working from. As development purpose I have added our domain in .dev and our production domain.

In development, I could connect to my dropbox account, and even display the chooser, pick some files.

We deploy our development in production. I can still connect with my dropbox account but the Chooser cannot be displayed with the error: 

{"error": "Origin does not match any app domain"}

The domain is included in the Chooser/Saver domains section.

However in production and development we use sub-domain (sub1.example.com) and it was working in dev. So I tried for test purpose to add the subdomain in the Chooser domain list just to see if it was that but it is still not working.

Could someone point me to my mistake?

Thanks in advance

Stephanie