Default Authentication - abnormal behavior

RouterOS Wireless Networking
1

Hello,
two hours I fought connect client to RadiusServer(FreeRadius).

  • in Log in the Radius server I found the account has been verified, but Router did not finished the process
  • in log at Mikrotik I did not see something about MAC banned is not in AccessList
    on the wireless interface I have activated Attribute ‘Default Authentication’ , but the client was able to connect only when I added his MAC into Access List.
    Is possible that despite the ‘Default Authentication’ is active router block MAC from some other reason?

RB2011UAS-2HnD
v6.42.6