Hi Sanjib,
None of our currently supported apps contain a Dropbox upload feature. There was this feature in an older version but that version is no longer supported. The Dropbox functionality will not work.
What app are you using? What version is it and what device are you using it on?
Yes, that is an older version of the VideoScribe app for mobile devices that is no longer available and no longer supported. The Dropbox functionality will no longer work.
We do not currently have a VideoScribe app available for Android.
There is no new app for android.
-Mike (videoscribe user)
Related thread about videoscribe for Android:
http://help.videoscribe.co/support/discussions/topics/11000014209
Sanjib Bera