"Created By" Field Inconsistent

I have a sheet that is populated by two forms. When a row is added from one of the forms, the Created By field is populated with the user's email address that sent the form, but the other form just populates as "web-form". Both of these forms are accessed from a single dashboard, so users are always signed in when submitting them. I tested them myself and I cannot get both forms to populate my email address. One form always includes it while the other never does. Is there some condition that would cause this behavior?

Thanks in advance!

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