Did you reset the PA4010 using utility and repair or rename again?

Quite easy. Remeber to disconnect from other network if you can access internet. Connect your PC to LAN port of W8951ND. Open the web browser. Type in http://192.168.1.1 in address bar and press...

W8901G is too old to release a new firmware.

Take tp-link technician's advice to replace it. If the problem continues, they can further look into it. How do u think?

In Quick Setup--Start page, go to Next and you can choose operation mode according to your internet service. If you use it as ADSL modem router, just follow the QIG....

You are using TD-W8968 V3? If so, it has EWAN feature which means that it can work with a fiber modem. The rj45 cable should be plugged into LAN4/WAN port on W8968. Follow this....