I received an error stating only one entry is allowed

I signed up for the free account of 100 submissions or less but when i sent a test i received an error stating no more submission available. Can you help me fix this as will want to upgrade next month. 

I have checked your account and found that it's active and well within the submissions limit. Could you please try a submission again and get back to us if the problem persists?

Thank you in advance.

Attached is the screen shot of the error

Thanks to the screenshot you provided I was able to identify your problem. You have enabled the multiple submissions prevention check, which explains why you are not able to send more than one submission:

For more information on this feature please see our guide on how to set unique submissions on a form here: https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

I hope this helps. If you need further assistance please let us know. Thank you.

Fantastic Thank you so much