warning Zyxel

Error Code LED blinks rapidly

WPS fails to connect WRE2206 to a router/AP using WiFi Protected Setup.

? What Causes This

There may be issues with the wireless security or settings mismatch.

How to Fix It

Verify that both devices are configured correctly, including matching SSID, channel, and encryption modes.

Source: page 9 of the official manual

From the manual

Manual page 9 — Zyxel error LED blinks rapidly

This error code appears in:

Zyxel Wre2206 Wireless N300 Range Extender User Guide