Filled PDF not sending as email attachment

Hi, I'm using a a form which fills out a pdf that is supposed to be sent out as an attachment to every email notifications. For some reasons that I don't know the last form submitted didn't send the filled pdf in the email as an attachment. I need to find this PDF now but I don't know where to look and I don't want this happening again.

Hello,

I have checked and cloned your form, and I can see that it is configured correctly to send the original PDF form as an attachment on the email notification. I have also made a test submission on the cloned version, and I was able to receive the attachment:

May we request for the submission ID wherein you didn't receive the attachment on the email notification? For reference: where-to-find-the-submission-id to take a closer look at the issue? If the form is also embedded on a website, please provide us the URL where it located, and can we make a test submission and use your form to investigate it further?

Thank you. Looking forward to your response.

This is the submission ID: 4917469194412401615. The PDF was sent on the first submission but it didn’t in the edited notification email. The edited notification email with the edited PDF is the most important for us.
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Hi again,

Kindly note that I've checked your form settings and didn't replicate the issue on a cloned form.

Can you please authorize us to test-submit your form so we can further investigate?

We're patiently waiting for your response.