Lockout user

ITserve

Dear community,

I have a USG60 with a locked out WAN ip adress, but when i try to unlock it the putty says can't unlock user from  xxxxxx WANIP. I did the following:
configure terminal 
show lockout-users (this finds 1 IP)
unlock lock-out-users WANIP 

then it says cant unlock user from WANIP.

somebody has a solution?

Zyxel_Charlie

@ITserve
Does the issue occur every time?
After the message shows"cant unlock user from WANIP", can you login with the account via GUI?
I tested this feature locally without any issue.

If the message display"cant unlock user from WANIP."~~It's probably, the account already been unlocked by system. 
Charlie