Dear Tinafi, We do understand your disappointment with the product and the inconvenience this may have caused if you are experiencing weak signal strength. Indeed, the coverage of this ZenWIFI is up to 5700 sq. ft. To resolve a weak WIFI signal, check if the Mesh routers are within 30 feet to the ISP's modem, if not wired with a network cable, and your ISP's internet service or connection is working properly or stable. Place the routers in a central location within your home, away from walls and obstructions, keep it elevated off the floor and away from electronic devices that may cause interference. Furthermore, update the firmware if the routers are running with an older version. The most current firmware version is posted at: https://www.asus.com/us/networking-iot-servers/whole-home-mesh-wifi-system/zenwifi-wifi-systems/asus-zenwifi-xt9/helpdesk_bios?model2Name=ASUS-ZenWiFi-XT9. Should you need further assistance with the product, please email me at cl-rodel@asus.com and I would be more than happy to help. Or you are most welcome to call Product Support Hotline at: 1(888) 678-3688. Also, you can chat with an ASUS live support agent from the link: https://www.asus.com/us/support/article/1135/. Thank you for choosing an ASUS product. Regards, Rodel ASUS Customer Loyalty