Dropbox Token and Authorization Updates
Starting September 30th, 2021, the Dropbox Authentication model has changed: OAuth flow no longer returns long-lived access tokens.
BackWPup has been appropriately updated to handle such a change: version 3.10.0 implements all the needed updates that let you continue using BackWPup as usual.
What should I do as a BackWPup user?
In general, there are no particular changes to perform. The important thing is to update your plugin to version 3.10.0 to manage the new authentication model set by Dropbox.
If you don’t currently have a job connected to Dropbox after the updates, you don’t need to do anything further.
However, if you have already created some jobs and connected them to Dropbox using a previous BackWPup version, you will need to re-authenticate to Dropbox.
If this is your case, right after installing the latest version, you will get a notice that warns you to re-authenticate your jobs, as shown in the figure below.
To re-authenticate your Backup jobs, read How to back up WordPress to Dropbox.