Gps anchor for fishing boat

I decided with the driver - I connected it to ardu nano, uploaded the sketch, and it all worked!

configured the settings, but there is a problem with the configuration

in line 8 -BRD_SAFETYENABLE, 0 - there is no such option, there is BRD_SAFETYOPTION … is it the same thing?
there is also another question.
when activating the LOITER mode, I do not move the model, but on the map it shows me the deviation from the point! …help me solve these questions