@Dannnnnnnnn Hello, Sorry that we cannot open the link you attached. Do you still use the original power adapter? Was there any power cut or bad weather before it stops working? Try one more time to...

@VinnieT If you changed the SSID (TP-Link_...) on the wireless router, all of the wireless clients will need to connect to it manually by typing the wireless password again. Thanks.

@kagashe Below is the guide to install an IPv6 connection on the wireless router, please have a look and confirm the settings: https://www.tp-link.com/support/faq/2047/ Thanks.

@Nikhil_Kaintura Do you mean WPA/WPA2-Personal for wireless security? You may login to the router web UI to confirm it: https://www.tp-link.com/support/faq/2215/ May it helps.

@Koushik.vns Hello, As per your description, it seems that the A9 router is working properly and you want to join your wireless printer to the wireless network. You may refer to the below link to...

@CHARAN Hello, If the 5G wireless connection is no longer working, please login to the web UI of the C1200 to change the SSID and wireless channel: https://www.tp-link.com/support/faq/2292/ Try to...