When I updated to macSierra, ScanDrop doesn't function for creating PDFs from my HP laser printer/scanner. Do the providers of ScanDrop have an update available?
The support page and all the links provided on the App Store are not working or they lead to something that has no connection with Scandrop.
On the App store, the ScanDrop Lite is listed as being compatible with Mac OSX 10.6 or later. I recommend installing that version to see if it works in Sierra. There is also no update regarding this version of Mac OSX.