Laundry planner unavailable on app/can’t wash remotely

Downloaded SmartThings today and connected my washer with no problem but I can’t start the washer remotely. When I select the wash and send it to washer I then have to go and turn it on manually. I’ve realised I can’t select the laundry planner and I’m wondering if this is were I I need to input the wash to do it remotely. Can anyone explain why I can’t get on to laundry planner or what I’m doing wrong? Thanks!!