This is a reminder of an old issue which is still unresolved. It was reported 2 (!!) years ago and even after all these updates of dropbox app for android and the various versions of android since then, it remains unresolved.
The problem is that some folders which apparently contain specific greek letters don't show up at all or are empty.
For my dropbox team, the problem still exists.
Some folders don't appear on the android dropbox app and even if they show up, when you try to access them they are empty. If you go back to the parent folder, the folder that showed empty dissapears. For example I upload 2 photos. One is from PC and the other from Android phone. Both show the Dropbox Team Folder contents. On the Android Phone, most folders are missing.
Android phone is Oneplus 5T, running Android 8.0 Oreo and dropbox app is updated to version 84.2.4
This is a bug reported and well described many years ago. You can find all the details here
A quick example is the following.
I have a folder named "ΑΠΟΓΑΝΤΙΣΜΟΣ ΔΑΚΤΥΛΟΥ" which contains a couple of images. The folder is fully accesible in many windows pc's but it has never been visible in any of my android devices all these years!
For more info on available support options, see this article.
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