Yeah, actually, the default IP of the Draytek is 192.168.2.1 which I did go and change on first setup 🤦♂️
The XT8 is indeed on 192.168.1.10 (the other station is 192.168.1.11).
I think DHCP is disabled automatically if you change the operation mode to modem only (rather than modem router) and...