Your Marlin configuration seems correct. Not sure why it is not allowing the 10mm clearance when homing.
What version of Marlin are you using? It appears to be a older version.
The newer versions of marlin use
#define Z_CLEARANCE_DEPLOY_PROBE 10 // Z Clearance for Deploy/Stow
#define Z_CLEARANCE_BETWEEN_PROBES 5 // Z Clearance between probe points
What version of Marlin are you using? It appears to be a older version.
The newer versions of marlin use
#define Z_CLEARANCE_DEPLOY_PROBE 10 // Z Clearance for Deploy/Stow
#define Z_CLEARANCE_BETWEEN_PROBES 5 // Z Clearance between probe points