CoursePress Form module text fields

1) Please go to (login and enroll you self):
https://course.m4europe.com/courses/m4-first-module-m1-master/units/m1-master-forste-samling/page/8

2) Put in some numbers

3) Click next

4) When click Previous to see your results.

Then you see: https://screencast.com/t/RMeGzbeYd

The point : how can an text Questions be Correct/Incorrect? without any settings?

How can a text field be wrong? Either it should be marked as "not answered", and correct needs to be correct.