WiFi pods not connecting to replacement router

Hello, I had my hub 4 replaced yesterday with a hub 5 due to issues with the Ethernet. Now my hub 5 is installed my 2 WiFi pods are not connecting despite the engineer telling me it will only take 15 mins. Customer services have said to move the pods closer to the router (no success). Turn the router and pods off and try with just one pod first (again no luck) please help 🙏🏻