I signed up to be able to combine invoices I have exported to PDF from SAP and send out in one email. It seems I cannot do this, even though all three PDF's are open in Adobe when I try to combine it takes me to a webpage and asks me to drag and drop the files in. Well, this is annoying because when I export to adobe I cannot save to my computer. The save icon is greyed out. I have to email them to myself individually to save them to my computer, then drag and drop them in. This is not convenient, why can I not drag from Adobe's recent files to the website? or use the Adobe Acrobat Reader to combine the files I have open in the tabs?