SCORM file not downloading

Long time user of Rise 360.  Recently, the SCORM file is not downloading (PDF is still successfully downloading).   

-Clicking Publish > LMS >Publish

-Receive the traditional "Publish Successful", but no automatic download as in the past. 

-Receive the email link > Click "Download Content" in email > Click "Download Content" in opened window 

-Nothing happens

Again, the PDF downloads as usual.  

Thank you!