Is there a way for survey participants to retrieve or reset a lost token without having to go through the survey administrator?

lost token ?
How the user have his token ?
What do you want exactly ?

Denis

Let's say the survey participant accidentally deleted their invitation that contained the token or token link. Is there a way for that participant to go to the survey page and retrieve or reset their token using, for example, their email address and answering a basic security question (that is stored along with their token in the tokens table)

If you allow register : yes. Else : no.