I am a power user of Synchronator as I do cross development on Windows/Pythonista.
I just checked my versions of requests and dropbox, which work fine in my case:
requests: 2.18.1
dropbox: 8.0.0
Welcome!
This is the community forum for my apps Pythonista and Editorial.
For individual support questions, you can also send an email. If you have a very short question or just want to say hello — I'm @olemoritz on Twitter.