I can't access my questionnaire, error 400, what should I do?

You are encountering a 400 error with the display The CSRF token could not be verified when you want to access a course start or end questionnaire.

To bypass this blocking event, please click on the link at the bottom of the page:

If this link does not appear, please contact us via our contact form, making sure to mention the field with the URL of the page concerned.