I am trying to connect to dropbox from QSCB but the button doesn't do anything.
The other connectors seem to work fine.
Using Microsoft Edge and Dropbox personal
I have replicated this and logged it as a bug. I assume you are attempting this from the Data Manager, which is where I saw that same behavior.
There is a workaround: If you go to the Data Load Editor, it is working from there. You should be able to create the connection there, then reuse it from the Data Manager.
I apologize for the inconvenience.
Tracked in Jira QLIK-93363 already
Issue is solved now.