To see available shifts, you must be assigned to the same position and location as the scheduled shift.
You can check your profile to see your assigned locations and positions. If anything is missing, please ask a manager or admin to update your details.
If you know you share the same position and location, check your app schedule filters.
Go to the Shifts tab, make sure you're viewing the available tab, and tap the Filter icon at the top left.
In the filters window, make sure the available shifts option is selected. Tap apply filters to save any changes.
This should ensure that available shifts matching your profile details are visible to you.