Terrible

I cannot get a document from an email into this app, which is the most common workflow. I have a Dropbox account, and so I tried using that. I gave the app my Dropbox credentials, and Dropbox notified me that the app was connecting, but all I get is a blank screen when I try to open it. I am now worried about whether my Dropbox account has been compromised.

crazybrit about DWG FastView-CAD Viewer&Editor, v2.2.0