When a user use the "Save later" option, this message is displayed:
To remain anonymous please use a pseudonym as your username, also an email address is not required.
It's true that the email address is not required, but could we tell the user that it will helpful to retreive their survey. If I'm right, the user stay anonymous even if they save a username. If it's true, then the message displayed should be something like this:
To remain anonymous please use a pseudonym as your username, also an email address is not required, but will be helpful to retreive your survey.
Thank for your precious help!