Wireguard overlapping issue

Morning,

I have been successfully using the unRaid built-in wireguard for some time with my phone. 

Yesterday I tried connecting a remote Nvidia Shield (in Spain) to my unRaid server (in UK) via Wireguard, however it would appear that I have run into the "overlapping IP range" issue as it will not connect. As such, am I right in thinking that I need to change my whole home LAN subnet from 192.168.1.0/24 to something a little more unique to prevent overlapping, or is their a simpler solution (I'm hoping that I have misunderstood and their is an easier way)?

I want to double check that this is necessary, as I've never done this before so it will be a huge undertaking for me to change everything on OPNsense, static leases, docker containers etc. I'm tempted to just keep the remote Nvidia Shield on Tailscale, however I do ultimately want everything running via Wireguard. 

Any advice will be greatly appreciated. 

My unRaid Wireguard settings;

Edited July 8, 20241 yr by ytddewqf