Two <Oauth calls in same class getting mixed up?

[MikeDev]

I make two Oauth calls in the same class, one to my server (when a new user registers) then one to the fitbit server to authorize the new user, for some reason, no matter what, the second <Oauth function is using the data result from the first Oauth call that is in a completely different function (in the same class).

How is this possible? I cant figure this out at all, is it something to do with multiple <Oauth class in succession that the threads get mixed up or something? the data1 is from the previous <Oauth call that happens before this but should never be in this function.

fitbitSectionContents(){
        var message = this.getSetting("fitbitAuthorizationMessage");
        if(message){
            return (
                <Text bold>{message}</Text>
            );
        }
        return [
            <Text>You must connect your Fitbit.</Text>,
            <Text>We will not have access to your Fitbit account password.</Text>,
            <Oauth
                settingsKey="AuthorizeApp"
                label={<Text align="center" bold>Tap here to connect your Fitbit account</Text>}
                status=""
                authorizeUrl="https://www.fitbit.com/oauth2/authorize"
                requestTokenUrl="https://api.fitbit.com/oauth2/token"
                clientId="1111"
                clientSecret="111111111111111111111"
                scope="activity nutrition heartrate location nutrition profile settings sleep social weight"
                onReturn={async (data1) => {
                    console.log("Data from oauth: " + JSON.stringify(data1, undefined, 4));

                    this.setSetting("fitbitAuthorizationMessage", "Logging in to Fitbit...");
                   
                    this.getFitbitTokenFromExchangeCode(data1.code).then((function(result) {
                        console.log("Data from code exchange: " + JSON.stringify(result, undefined, 4));

                        this.setSetting("fitbitAuthorizationObject", JSON.stringify(result));
                    })).catch(function(error){
                      console.log("Error getting Fitbit token: " + error);
                    })
                }}
            />
        ];
    }