I am happy to see that the Dropbox app now supports synced folders aka offline folders. However, a major limitation still is that they can't be saved on the SD card.
This is stupid, in my case for example I have a 256 GB SD card in my phone which is mostly empty, but only 32 GB of internal storage, which are almost full. Hence, I am using a £10 third party app (Dropsync Ultimate) to sync some of my Dropbox folders to my phone's SD card. However, it is a shame that I have to use a third party app to do this and that I have to spend more money in this simple issue even though I'm already paying for Dropbox Premium.
So please, make offline folders on SD cards possible for us!