Dear @Amir_Reza_Bahrami ,
Thank you for reaching out with your query,
Im seeing duplicate issue as also this link : Problem communicating between the EC200UEUAA module and the ELM327 (spp_c and hc05 modules) dongle via classic Bluetooth and Quecpython
Could you please confirm whether this is the same inquiry? I understand that my colleague is already handling this via mail.
Thank You and Have a Great Day!