Hi @CiderHouse
How big are the files individually? As long as they are under 5MB each, there shouldn’t be any issues.
If you have saved them as PDFs, there are some ways you can try to compress them (there are a few guides on Google regarding this), but I don’t believe this is possible with Camscanner. You may however be better off asking them directly.
Once you save the files to your Dropbox folder, do you also see them on dropbox.com in the Apps\Quick File Receipts\ folder?