Bought Nest Wifi router along with wifi extension points in US. Want to use the product in Germany with a DSL modem from Fritz box. I see the device on Google one app. But can't connect to either of them. For router it says 'internet' not found. For wifi point, it says your device might not be compatible to be used in your country. How to solve the problem ? Is it going to be not at all possible to solve issue now ?