If you are not getting a login window or a "PDF name" was saved message at the bottom of your page, Google may have blocked the pop up window to save the PDF.

Check the upper right hand corner of the browsers URL bar for a blocked pop up message.  

Click on the message

Select always allow pop ups from : https://pdf.snapandread.com

Click on the top link to open the Microsoft or Google Log in.

or 

You can add Snap&Read to the pop allow list.

In your Chrome Browser settings navigate to:

Settings>Advanced Setting>>Privacy and Security>> Content Settings>>Popups

Click on add to the right of allow

Enter in: https://pdf.snapandread.com:443

Click on add

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