i think the Spintax Check for SER v.8.90 if the content is imported by Kontent Maschine is broken. I check it with "TEST" and everything looks good after importing the data and articles but SER always comes up with a warning:
The spinbtax in "website_title", "About_Yourself", "Description_450", "Video_Title", "Video_Description", "Blog_Name", "Blog_Tagline" might be wrong...
But really i tested it many times, this isn't true. The Test always shows good readable content without brakets.