This is a educated guess
Try setting these back to positive,
#define X_PROBE_OFFSET_FROM_EXTRUDER 26 // X offset: -left +right [of the nozzle]
#define Y_PROBE_OFFSET_FROM_EXTRUDER 16 // Y offset: -front +behind [the nozzle]
Try setting these back to positive,
#define X_PROBE_OFFSET_FROM_EXTRUDER 26 // X offset: -left +right [of the nozzle]
#define Y_PROBE_OFFSET_FROM_EXTRUDER 16 // Y offset: -front +behind [the nozzle]
