AdWords Fundamentals Exam Problems (Outside the USA).
This one caused me much consternation, as my exam had expired, and I was unable to retake it for 5 days before support worked out what the problem was!
Turned out, that I had to change the language from “English (United Kingdom)” to “English (United States)” before it would let me start the exam!
So now you know if anyone else outside the USA is having the same problem.
More info below (and, yes I did pass by the way, and yes, it does still include some *very* ambiguous / poorly worded questions)…