Hey @Mammoo01 ,
happy to have a look at this. Do you get the error code on the watch or phone? How long have you been experiencing this and have you made any changes on any of the devices since this started (upgrading the software, downloading any apps...)?
Just to be sure that we are on the same page, the watch connect to the phone via Bluetooth but not via the Samsung Wearable app? If this is the case, would you be able to uninstall the app and re-install it after restarting both devices? Once done, try to connect the watch to see if the issue persists.