how can i put a limit on number of submissions

Hi there,

Yes, you can create a limit related to, how many submissions can your form get. When this limit is reached, the form will be disabled from accepting new submissions and warn the user with a message. Here is a screen capture about where you can set your form's limits and edit your warning message:

You can also check out this user guide for more details: How to limit submissions in a form 

If you need further assistance, please do let us know.

Scott.