Description of my issue:
New installation.
After installation of AkeebaBackup I tried to connect to dropbox, which I did for other sides on this hosting before, but during the first step the Dropbox-Page shows an error (in german) "Die Verknüpfungsanforderung ist ungültig", which in english means like "the connection request is void". (No error in log)
If I try to connect other pages on this hosting, they now show the same error, while still connected to dropbox and working.
Any idea on this? Thanks in advance!