Have you had a look here?
Dropbox isn’t working - What you need to check for first
As you mentioned you’re trying to connect multiple accounts, the folders need to be named in a specific way, you will see a few examples here:
Have you had a look here?
Dropbox isn’t working - What you need to check for first
As you mentioned you’re trying to connect multiple accounts, the folders need to be named in a specific way, you will see a few examples here: