First things first, check with your coach that they've definitely updated your schedule with new activities! It could be as simple a problem as them not having updated your weekly activities yet.
Next, make sure you have a network connection. Your phone will need one to update your schedule properly.
If both of these things are okay, try force closing the app completely. Don't just navigate away from the app, make sure you go into recently opened apps and swipe the open Fitmo app away from the screen.
Finally, if all else fails, fully delete and reinstall the app.