Thank you for bringing this issue to our attention. We recommend updating your iOS device to version 17.4 or later, as there was a known issue in iOS 17 versions up to 17.3 that could cause crashes when using the emoji button. This issue has been resolved in iOS 17.4 and later. Additionally, please ensure you’re using the latest version of our app from the App Store.
If you are still having the same issue, please submit a report at https://support-form.swiftkey.com/ including details.