If you can verify your autopilot is connected. , ie it can steer to cursor or route
waypoints then next Also verify in the data panel , that you have heading data ( though I suspect you have not ) then next off try a factory reset/reboot.
Factory Reset Procedure
Switch OFF the power to your MFD using the MFD's red power button.
After the MFD has been switched OFF, press and hold the left-most soft key (1) in while switching ON power to your MFD. Continue to hold the left-most soft key (1) pressed until the Raymarine
Configuration menu is displayed. Release the left-most soft key.
Press the left-most soft key (1) to command a Factory Reset of the MFD. The MFD will report "Erasing FLOB system (30 seconds)".
After approximately 30 seconds, the MFD will report "FLOB Erased" signaling that the factory reset has been completed.
Press the right-most soft key (5) to exit the Raymarine
Configuration menu. Doing so will also cause the MFD to boot up as it normally would and display the "WARNING - LIMITATIONS ON USE" dialog.
Note you will loose any user data like waypoints routes etc. you may have to re establish any particular user settings but unless you have a complex system , the defaults should bring it up