Hello, I hope someone can help me here. I bought the mentioned router for our vacation in Croatia. When I got here yesterday I bought a prepaid Internet card from T-Mobile HR. This works perfectly on my cell phone. In the router everything seems OK. It shows internet connection and wifi. I can also access the user interface of the router from my cell phone via the web browser, which basically shows everything as OK. The problem:

I can log into the WLAN on all devices, but only without Internet.

What can I do to give these devices internet access? Firmware update doesn't work, by the way, since I don't have internet.

Many thanks and regards Thomas