How to fix WPA\WPA2 on DIR-300 Rev.A?

Question

WiFi

Dobroden.
Given: Dir-300 revision A. Latest official firmware, several soft resets and flashings. WPA \ WPA2 network encryption does not work, or rather it turns on, but you can’t connect to the network - an authentication error. The option with the wrong key is excluded by copy-paste and setting a known simple key. The problem appeared after a rollback from DD=VRT to the factory firmware. I rummaged around with the help of telnet on its OS - it seems that everything is set correctly: both the key and the type of encryption.
It is necessary: ​​to cut down WPA \ WPA2 encryption of Wi-Fi.
To clarify: everything is fine with WEP - devices connect normally, the key can be changed and the settings are applied.

Answer 1

Is one device not connecting or several?