If you reach your response limit, your surveys will stop automatically, so they will not be collecting any further responses.
Depending on the plan you are in, your response limit will be different. For example, in the free plan, you have 100 responses per month from all your surveys. If you've collected 100 responses when 101 respondent opens the survey they will see a message "this survey is unavailable." In this case, you can upgrade your account to restart your surveys.
You can see your response usage and upgrade your plan from Settings > Subscription
But if you are concerned about reaching the response limit, we advise you to upgrade before sending your surveys to your audience, to avoid missing valuable feedback. You can get in touch with us at firstname.lastname@example.org to find which plan suits your needs the best, or strike up a chat conversation 👉