Dropbox sync does not upload

Hello,
I’m trying to do an automation to backup my snapshot but cant understand why it doesnt upload,
can anyone see the problem?

dropbox sync config:

{
  "oauth_access_token": "my token",
  "output": "/backup",
  "keep": 10
}

automations.yaml:

- alias: Backup Dropbox
  trigger: 
  - platform: time
    at: '03:00:00'
  action:
   - service: hassio.addon_stdin
     data_template:
       addon: "ate23ff5_dropbox_sync"
       input: {"command":"upload"}

I get these massages on the sys log:

19-11-02 07:27:52 INFO (SyncWorker_19) [hassio.docker.addon] Start Docker add-on dwelch2101/dropbox-sync-armhf with version 1.3.0
19-11-02 07:33:13 WARNING (MainThread) [hassio.addons.validate] Unknown options keep
19-11-02 07:33:16 INFO (SyncWorker_16) [hassio.docker.interface] Stop addon_7be23ff5_dropbox_sync application
19-11-02 07:33:17 INFO (SyncWorker_16) [hassio.docker.interface] Clean addon_7be23ff5_dropbox_sync application

Thanks for the help!

Did you ever sort this i am trying this also. If i use the the call service:

hassio.addon_stdin
{"addon":"7be23ff5_dropbox_sync","input":{"command":"upload"}}

It works but in a automation i get the following error and not sure how to fix:

Message malformed: extra keys not allowed @ data[‘action’][0][‘message’]

Can’t get the automation to work from the GUI but in Yaml:

- alias: Snapshot 3AM
  trigger:
    platform: time
    at: '3:00:00'
  condition:
    condition: time
    weekday:
      - sun
      - mon
      - wed
      - fri
  action:
  - service: hassio.snapshot_full
    data_template:
      name: Automated Backup {{ now().strftime('%Y-%m-%d') }}
- alias: Upload dropbox 4AM
  trigger:
    platform: time
    at: '4:00:00'
  action:
  - service: hassio.addon_stdin
    data_template:
      addon: 7be23ff5_dropbox_sync
      input: {"command":"upload"}