Some websites don't open but some do after new installation of the router with new internet provider
Hello,
Today, I installed a new router with a new internet provider. I managed to establish a connection and can access many websites, but there are many that won't open. Even in the router settings themselves, the information seems contradictory. There is a checkmark next to the internet icon, but when I try to search for a firmware update, it says there is no internet connection. I have confirmed that both IPv4 and IPv6 are set up correctly, and I have also tested different DNS servers. Now, I'm running out of ideas. Does anyone have an idea of what the problem might be? Thank you very much and best regards.