Dropbox no connect (Beginner with cloud pack)

Hello Bruno,
thanks for your answer.
The Chromium is already installed and works fine for the TTMSFMXWebGMaps.

But never mind. I just want to use it in Android and iOS.
It just would be easier for me to test an understand the mechanism in Windows.
Is there an example ( Android / iOS )  or documentation on how it works ( what is important ? ).

In TMSFMXCloudPackDevGuide.pdf I found just a link to dropbox and how to get the "key" and "secret".

Thanks
Klaus