Currently Spark examination is not available and the certification page says it would be available by 22nd August; I;m writing this post on 23rd Aug, I don't see any updates on the certification page.
NOTICE: This exam is currently undergoing maintenance. It is available for purchase, however, exams cannot be scheduled until an estimated date of August 22, 2018. Thank you for your patience.
It's 23rd Aug today, can you at least update the page with future date ?
Not sure if Horton takes certification seriously.. you can see many threads/posts about the horrible experience people have gone thru,