Bedside Lamp 2 Homekit Setup Code Incorrect

Hi, I am having hard time connecting my bedside lamp to apple homekit.

These are detailed info of my product.

SN: 19972/00136456
MAC: 40313C3CA798
Manufactured: 2019.01
Homekit code: 1940 6758

Can anybody help on this issue?

Please contact your retailer for a replacement or refund.