That’s a different address range. Unless all your PC’s are getting their IP addresses automatically, in other words none have a fixed IP, you will have problems with them communicating. Have you tried re-booting the wx PC?
Have you set the same wifi password as on the old router?
from memory if the computer was set to auto ip allocation and was still running when the router was changed it would still be using the ip address issued by the old router so would require a reboot to get a new ip address from the new router which is what has happened in this case