after activated mrt flashtool frp mediapad m5 fail

i put huawei mediapad m5 in fastboot i click start on frp account its failed:

>>>>Clear Frp Block
...
FAILED (remote: Command not allowed!)
finished. total time: -0.000s
>>>>Rebooting Mobile Phone
rebooting...

finished. total time: 0.031s
with this you need use USB COM 1.0 function boot mobile to fastboot