hi guy’s

I try to put 2 sensors for my jet on my 18mz
the first sensor is jetcat telemetry and second is powerbox sensor to read volt and mAH.

but i try to put the first jetcat sensor... the only slot working is slot 16 to 29. If i choose another slot , the sensor not working

and after i try to put powerbox sensor on my 18 mz . I choose register option , and i read register failed not enough available alors.???

i have slot 1 to 15 not used but qu’en i try to put sensor in this slot the sensor not working.

can i put more that one sensor ...can you help me working this please
thank’s
Dave