How can i change the Gateway ID of my HT-M00

As soon as I try to activate my gateway in the TTN, it reports that this ID already exists.
I myself have not used this ID before. Perhaps it is a return from another customer.

How can I change the gateway ID?

The gateway ID of the HT-M00 is currently produced based on the MAC address. It does not support modifying the gateway ID. In the next few days, we will make a firmware that supports the modification of the gateway ID.