I am attaching screenshots of the issue again so you have a visual of the issue that occurred for your technical department can look into it and find out what caused it, and hopefully correct it to ensure it doesn't happen again with ANY accounts moving forward (it contains the time/date stamp they will need to pull the logs).
All troubleshooting steps were performed.
(1) double-checked clients website form to ensure the field was set as a required field. It was! (all previous website form submissions, the field was required and was filled out and displayed properly in the body of the email)
(2) All website form submissions since then have been correct, as well.
Appears to have been a bug/glitch in the system, causing the abnormality.
Required field in website form was inserted in the subject line of the email rather than IN THE BODY of the email where it should've been.
Three screenshots provided.
(1) how the website form email appeared in the inbox with the abnormal subject line
(2) how the body of the email appeared missing the required field in the body of the email and instead showed up in the subject line
(3) how website forms should appear.
Highlighted in the screenshot below is the required field that was missing from the form submission.

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