If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate.

Which combination did you check?
What compatibility label was unclear?
What verification reference was missing?

Author notes / illustrative keys where applicable:
1. Read for combination context. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.
2. Read for label meaning. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.
3. Read for reference. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.