Wireguard cannot handshake after change IP

I have a rb3011 ros router with 7.10.1 system. When I started a wireguard session to my vps (on ipv6), it worked fine. But when my home network changed ip address, the wireguard interface stucked and do not link again. I checked my vps wg, it showed the new ip has already tried to handshake with the vps, but failed.

What is the problem? If anyone have answers, thank you.

I use ipv6 address, NOT domain , to connect to my vps.

I Believe that shortcoming was addressed in a later version, 7.11. We use to have to add scripts to address.