octopus credit , how to use

About octopus credit

How to use ?

I click SUPPORT& OPTION

THEN in side : account setting / username / password
i enter my username : au… and pass

and then get this error

Connecting to server…
Could not connect to the server! Your IP is in black list!
Performed by 2.3.9 Software version.

what is it ?

do i need create USERNAME and pass ? how ?

Please help