How can I add three email recipients for the responses of my survey?

As you can see above, I have two receipient emails, I would like three. It says I have to upgrade my account. To which level and why? When I started this form, I had three people in and all three received responses. I went to delete and re-enter my third person, only to find I was unable to do so. 

We recently implemented a limit on the number of recipients per email notification due to abuse.

Under the Free plan, you can only have 1 email recipient per email notification. However, since you already have 2 recipients prior to the changes, then you can keep it. However, if you want to add another one, you need to upgrade to any paid plan. Here's a guide: https://www.jotform.com/help/331-How-to-Upgrade-My-Account.

Alternatively, you can create another email notification on the same form and assign the 3rd recipient to that notification. Here's a guide: https://www.jotform.com/help/25-Setting-up-Email-Notifications.

Hope that helps. If you have any questions, let us know. Thank you.