react-native-linkdin-login is not working in ios? - react-native

Question

I am using react-native-linkdin-login library to support linkding sigin in my application.It is working properly in android but in iOS it always ask to download an application rather than application already exist in device and redirect to the APP store. When I open and login to linkdin account, I can't come back to my react-native application, with user profile details.
Give me any suggestion as soon as possible.
async componentWillMount() {
LinkedinLogin.init(
[
'r_emailaddress',
'r_basicprofile'
]
);
}
async handleLinkedinLogin(){
LinkedinLogin.login().then((user) => {
alert("linkdin");
this.setState({ user : user });
this.getUserProfile();
}).catch((e) => {
var err = JSON.parse(e.description);
alert("ERROR: " + err.errorMessage);
alert('Error', e);
});
return true;
}
getUserProfile(user) {
LinkedinLogin.getProfile().then((data) => {
const userdata = Object.assign({}, this.state.user, data);
this.setState({ user: userdata });
const Email = userdata.emailAddress;
const Fullname = userdata.firstName+' '+userdata.lastName;
const SocialAppId = userdata.id;
const SignupType = 'Linkedin';
alert("Please wait....")
this.socialLogin(Fullname,Email,'null',SignupType);
}).catch((e) => {
alert(e);
});
}