Troubleshoot Issue with Ionic V1 App, Display Splash Screen per unique device including iPhone X

We need experienced Ionic V1 developer who has published Ionic V1 app for Android & iOS, including iPhone X, to troubleshoot issue with displaying splash screen (we made multiple splash images for different screen sizes) to display each splash for specific device size especially for iPhone X. The main issue is with iPhone X, we are not able not to show the custom splash image we did to display on iPhone X. Experienced developers who have worked with Ionic V1, and pushed on iPhone X specifically, should apply.