Defaults - resets inputs to its default values - width, height, etc. If in troubles with OBS try exporting current scene settings as a backup before you start experimenting.
If you want to see the same image what you get from openlp on Screen2, then you should set your URL value into: http://192.168.1.3:4316/main
URL ending:
/stage - text only view for confidence monitors/main - openlp output copy/ - openlp web management interface