Deco M5 or Deco M9 should be a good

Hi man, can you repost your question in Enlgish?

Hi there, what's the SSID for your main router , and what's the SSID for the extender? It's suggested to setup in different name. What's the IP address when you connect to the extender's Wi-Fi? Is it...

Hey, It should support wpA2-PSK, but for encryption, it's suggested to leave it as auto.By the way ,what's the model number for your mian router

Have you tried other operation mode, such as range extender mode?

It's not sold seperately, only one model is sold seperately , TL-WPA4220