You can upload files as follows:
a. Top left icon--Settings--Doc Export--Manage Accounts, select the 3rd party cloud app (Box/Google Drive/Dropbox/Evernote, etc. ) and "login";
b. In the main menu, long press the document you want to upload--More;
c. Click "Upload/Fax”--select the 3rd party cloud app (Box/Google Drive/Dropbox/Evernote, etc. )-- "upload"
d. Then you can select upload format: JPG or PDF.

Also, you can select docs and tap "share"--share JPG or PDF file--select the 3rd party cloud app (Box/Google Drive/Dropbox/Evernote, etc.) to upload.

The feature of auto uploading to select the 3rd party cloud app (Box/Google Drive/Dropbox/Evernote, etc.) is available for premium account users which is based on a subscription service.

Open the CS app--top left icon--Settings--Doc Export--Auto Upload--select file format--select a 3rd party cloud app. After that, all scanned docs will be auto uploaded to the [CamScanner] folder in the selected 3rd party cloud app under wifi.