Form Submission in wix

Discussion:
i am trying to submit a form in wix but i have issues submitting it.

What are you trying to achieve:
i want to receive an email on submission of the mail for the first time when i have done this the email works . but now it is not working do not know why it show’s me this"
“Couldn’t submit form due to a temporary issue. Try again later”

Additional information:
i am using a free plan for the wix website.