It's possible that technical problems will cause your Linksys extender to malfunction. Nevertheless, by employing a few simple troubleshooting methods, you can get around this. For instance, moving the extender, connecting it again, and changing the parameters that are now installed on the extender. To accomplish this, visit the administration website and look through the advanced wifi settings. After some time has elapsed, you might try plugging the extension back in and rebooting it. This time, though, you should use a different power outlet because the previous one might have had a power supply interruption. 

If the problems persist, consider updating the firmware on the extender. Go to the Linksys RE6500 setup page and look for the latest version in the management window. Select the latest official file for the extender, download it, and save it appropriately. Once the upgrade process is finished, reboot the extender one more to make sure it is functional. Resetting the extender is an additional option that will get rid of any installed settings and errors. Next, carry out the setup once more and validate the challenges.