When you attempt to open the Mywifiext local website from your computer to setup the new range extender, then due to some reason, you find it difficult to access the page. This happens if the extender is not able to communicate with the servers of Mywifiext. Apart from this, if you are trying to access it like a regular website, then you will find a problem.
Mywifiext local is a local website that can be opened only after connecting the extender to the computer. This URL works only for Mac PC. If you are opening the URL from any other PC having a different OS, then you will find a problem. A strong working internet connection is required to access the website.
If you want to access the local website for configuring the new extender, then the Genie page will open which will function as a configuration assistant. You need to check if the Ethernet cable used is properly connected or not and should not be faulty. If you are still getting ‘Can’t access Mywifiext local’ message on the browser screen, then remove cache and cookies from the browser and try accessing the same page again. If you are still getting an error, it means there is some typo mistake from your end and gets this confirmed from the experts.