The certificate is designed to be downloaded/opened by the student after the locking conditions are met. The certificate cannot be pushed to the student.
You should add a label or a text page into the course next to the test or the certificate that tells the students they can download the certificate by themselves after the test.
If your test is a quiz and contains no freetext-questions (means: no teacher needs to grade it manually), the result is calculated right after the student submitted his attempt. After the attempt the students sees his general feedback, can browse his individual quiestion results and open the certificate as the next activity.
After you created the certificate activity, you can also put a link to the certificate activity in the introduction of the quiz.
Custom certificate (plugin)
Does the Certificate link Directly to the quiz
This discussion has been locked so you can no longer reply to it.