This screenshot is from a EA8500 when I login via 192.168.1.1, it shows admin settings. Being they are both smart wifi it may be the same on the EA8300?

Extender.linksys.com can be accessed using a computer or laptop connected to the network. But there are times when you can’t access this web address. To resolve this issue, check wired or wireless connections of extender and computer. Connect to range extender setup Network. 1. Be sure the range extender is plugged in and LED is solid green. 2. On your computer, smartphone or tablet, connect to the wifi network: “Linksys

Download Linksys Connect and enjoy it on your iPhone, iPad, and iPod touch. ‎Home networking just got easier. When connected to your home Wi-Fi, use the Linksys Connect mobile app to add devices to your network, manage guest access, and change Wi-Fi and router information.

extender Linksys com is called a default login window which gives you access to set up your range extender. Even you can also access the old extender wireless settings with the extender login default page. Whenever users enter the default extender web URL, the extender login page will open and ask for login credentials to proceed further. Here are the steps to Setup the Linksys Range Extender: In the foremost case, you will need to connect the computer device with the Range extender by using the Ethernet cable.