Authenticating with undernet.org's X service

[Kourosh P.]

Dear Pidgin support,
Thank you for an amazing app.

I am a new user with Pidgin. For the life of me I have been trying to
figure out how to use the undernet.org's X service with the Buddy Pounce in
Pidgin. Following the instructions on "How do I authenticate/identify with
a buddy pounce..." every time I connect to the server, X asks "To use
LOGIN, you must /msg X at channels.undernet.org".

How do I incorporate that in the Buddy Pounce settings as the Pidgin
website indicates not to use "/msg ...." ? I have even tried to add the
Buddy name as X at channels.undernet.org instead of X but no success.

Would appreciate your guidance.

Thank you in advance,
Kourosh