The virtual MAC address of zerotier is different from that of web page

Such as the title
English level is limited, please understand, thank you
I install VBox 6.1 on win10 system, and then install centos6 in VBox. I can register to run zerotier, and I can see it on the management page, but the MAC address of the management page is different from the virtual MAC address of zerotier in the system, so I can’t Ping other IP addresses. The screenshot is as follows。