Eileen - You are a genius! That was it, thank you.
In case anyone else runs into this issue, you need to click the form field, then click "Advanced", then update the field ID (not to be confused with the form ID).
Regarding your question about whether or not Elementor accounts for this automatically, I'm not 100% sure, since I did not build this particular site, but I'm guessing Elementor uses the same default id of "email" for all the email fields. It does look like there's a setting on the field ID where you can make use dynamic varisbles (page id, etc.)
Toby