Facer IOS Companion App Unavailable

Samsung Gear S3, latest Tizen update, paired to iPhone running iOS 11.2.1 - After update to Tizen, uninstalled companion app from watch. Then restarted watch to update with the latest companion app. Samsung Gear App on iPhone does not see that the companion app is uninstalled and instead shows it needs to be updated. When I try it, it just hangs. Alternatively, tried to install the companion app from the watch using Galaxy Apps (connected to WIFI and BlueTooth) - and it also hangs. Please help. Thanks.