Error message don’t let the purchases end

<p class="edd-alert edd-stripe-alert edd-alert-error" style="clear: both;">Por favor introduce una dirección de correo válida</p>

This is the message a user gets when clicking the purchasse botton in the purchase page. The problem is that I do not find the email field that causes the issue… any idea?

• This topic was modified 1 hour ago by Lucas.
• This topic was modified 59 minutes ago by Lucas.
• This topic was modified 37 minutes ago by Lucas.
• This topic was modified 37 minutes ago by Lucas.