only one entry allowed form error

"Sorry, only one entry is allowed"!

Please provide solution to solve the problem. Thanks!

I tried checking your account but I can't seem to find any form. It seems you're email address is registered to a Guest account.

However, the form error message you have received indicates that you have restricted your submission to allow only unique submissions.

You may check this settings in your Settings>Form Settings> Unique Submission

If you want to receive submissions on the same user, you may set the Unique Submissions to No Check.

Guide:https://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form

Please give it a try and let us know if the issue still remains.