In an all-party consent state you would need everyone in the call to consent for recording to be legal, but even in one-party consent states you would still at least need OP's consent to be recording! If the user says no and they record anyway, I can't think of any state where that's legal (though the EULA probably has something covering that, unsure if that holds up in court).
https://recordinglaw.com/party-two-party-consent-states/