On my Galaxy S8+ and Tab E, when entering the station to get data from, the enter key on the keyboard has no effect. The keyboard has to be closed to expose the enter button in btstWx Pro. Any chance you could fix the app to accept the keyboard enter key, too.
The back key is also ignored. It won’t put the app to the background forcing the use of the home button which also affects what home screen the phone was on when the app was launched, at least with some launchers. Also, when trying to close the Local Weather conditions window, the back button should have the same effect as the red X.