There's your problem..
AllowedIPs = 0.0.0.0/0, ::/0
Means you're blocking all other traffic.
AllowedIPs = 0.0.0.0/1, 192.168.0.0/1
(depending on your home network) or if that doesn't work
AllowedIPs = 0.0.0.0/1, 220.127.116.11/1
If you're using the official Wireguard program:
Open the interface.
Click on the tunnel you want to edit.
Good to know we got you sorted.
Took me a while to work it out myself.
You can also edit the conf file before you import it into wireguard (I've got it saved ready in case I need to reinstall my computer)