I send Edit link to my respondents so that they can change or finish their response. How can I prevent them from changing anything after the survey is closed?
There is not a built-in setting to disable edit links in closed surveys. One potential option would be to put some logic on page one of the survey that redirects respondents that use an edit link to the survey Thank You page.
An edit link uses the snc URL variable, you could target the variable with the logic condition.
For example, the logic could be:
If ‘url variable: snc’ is answered, send respondent to Thank You page.
You may have to test this out, but it might be worthwhile exploring this.
Hope this helps!