I have a Galaxy Watch 4. I have in the past had no problem being ablable to use the app to Calibrate my Blood Pressure and entering the readings, then using the app on the watch.I have reset the watch and deleted the Samsung Health Monitor app from the phone.. Through the watch I have connected to a new phone, followed all the instructions to connect the watch and was successful.
I then went into blood pressure on the watch, clicked download app to phone, which worked. Then pressed open app on watch. The app on the phone could not detect my watch. Please help.