A:Answer Hi Catlady. As a workaround, relocate the RE6300 range extender closer to your router, and then sync them once again. Make sure that you’re using the correct Wi-Fi credentials for the 5 GHz network.
If the issue persists, email us at LinksysCares@linksys.com so that we can assist you. Please include your contact details and the link to this post, for our reference.