The journal is published on the website at full resolution, and each PDF can surpass 75MB in size.  It can take a while to download and display on slower internet connections.

Here are some things you can try if the journal does not display in the window:

•   Make sure your account is not expired.  See https://www.spmc.org/user 
•  Click the green Download PDF button above the display window to save a copy to your computer, and then use Adobe Acrobat to view the file.
•  Try refreshing your browser page by pressing the F5 key.
•  Try using a different browser.  Recommended browsers are Chrome, Firefox and Internet Explorer.
•  Restart your computer and/or home router.
•  Try using a different computer.

Problems we see are usually limited to a particular computer and one or more of these tips will likely resolve your issue.