Hey folks, we’ll work on clarifying this in docs. In v2 Form APIs, the form id passed in to list form submissions will only correlate to that specific Form. Right now, there may be multiple form id’s to map to a single Webflow “form” which is a result of how many custom domains are set up on the site, if the form is in a component, among other scenarios.
To truly get all form submissions for the “same Webflow form” (no matter the amount of domains set up, or if the Form is in a component and instanced multiple times), please use this API:
With this beta API, you can list all form submissions querying by an elementId (which is the formElementId that you can get via the List Forms API). The formElementId should be a common value between form instances across multiple domains, as well as forms in components that are instanced.