Submission Storage Limits?

I've been notified that I'm almost out of submission storage. Will my forms cease to function once I've reached that limit, or will the oldest submissions simply drop off?

Once you have reached the limit of your account, your forms will be disabled. Users will not be able to submit from your form. If you have reached the Total Submission Storage limit of your account, you can simply delete some submissions from your form to decrease the Total Submission Storage counter. As per checking, your account pixelauthor has 315 Total Submission Storage count. Free Plan has 500 Total Submission Storage limit.

Do let us know if you need further assistance.
Regards.