what is error 0x020503 ,and how to fix . showing all four red study led. transmiter is not comnicating to deone. in transmiter led showing green but app showing air disconected .

Hi there
We apologize for the inconvenience that you are encountering.
In a situation like this, we recommend you send the device back for testing.
Thanks for your understanding.

my craft connected to transmiter but motors and gimbles are not working