I recently went from an iPhone 6 on iOS 10 to an iPhone 8 on iOS 11. I went into Editorial and noticed that Dropbox needed to be linked again. This message came up prompting me to link:

"Because of changes to the way your login is stored in this version of Editorial, you have to link your Dropbox account again. You only have to do this once."

When I proceed with that, it takes me to a blank screen. I've tried this multiple times. Sometimes I will see a screen that allows me to login into Dropbox. When I successfully login, I am taken to a white screen. The white screen never changes, forcing me to close the app.