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

Who did you expect the invitation to come from?
What did the invitation explain?
What information would help before accepting?

Author notes / illustrative keys where applicable:
1. The expected sender identifies the trust and organization context recipients need to recognize an invitation. Keep identities and invitation links out of the questionnaire.
2. The invitation explanation reveals whether recipients understood the sender, workspace purpose and joining action. Add verified context beside the actual next step, without collecting invite links or implying that every invitation grants the same permissions.
3. Information needed before accepting identifies missing joining context, such as purpose or verified access scope. Explain actual conditions without implying that all invitations grant identical permissions.