Email notifications for form submission not working

Hi there, I have this simple wixform configured to send an email when the user submits the form. I added a callback when the form is submitted to send the data to a external CRM. It was woking perfectly fine for a few days but now I am not receiving the notifications in my email (they are still being posted on the external CRM). After submission I do get the confirmation message as well, but my email inbox is empty.

Is there something like a limit in the number of mails that can be sent in a period of time?

This is my form


And in case is useful this is the call I make to the backend.

export function wixForms1_wixFormSubmitted() {
    let state_name = $w('#dropdown2').value;
    let data = {
        first_name: $w('#input5').value,
        last_name: $w('#input4').value,
        email: $w('#input3').value,
        phone: $w('#input2').value,
        company: $w('#input6').value,
        note: $w('#textBox1').value,
        type_of_service: $w('#dropdown1').value,
        state_id: states[state_name]
    } 

    saveProspectToCRM(data)
    .then(function(response) {
        console.log('it was successfull');
        console.log(response);
    });

}