What should I do if my router uses MAC filtering and my devices can't connect through the RE220?

When a device connects through the extender to your router, the MAC address shown on the router is translated to a different MAC address, which can block access if MAC filtering is enabled. To fix this, log in to your router and disable the MAC filter, then set up your extender and connect all devices to the extended network. Afterwards, add all the online devices' MAC addresses to your router's MAC filter table, and then re-enable the MAC filter on your router. (Page 53)