a2billing admin password

A2billing module installed vi admin module gui.

Now to access the a2billing module I need a login user and password.

Is there an install guide for the a2billing module via FreePBX?

After some further investigation, we were able to recover notes from initial install, where we discovered the configured user/password.

never mind.

You said you installed a2billing module via admin gui.
Would you please tell me how to do the same?