How to adding new payment icon for sign up

Hi , I have some Membership 2 pro issues wondering know how to solve it.

1) I'm wondering how to create a manual payment icon to the user ?
I mean when user want to register become a member he can see Paypal button at the register page (i have two types of payment gateway which is Paypal and manual payment ) ,but It didn't showing the manual payment button for user to chosen (as screenshot 01). If I want to showing a another icon which is Manual payment on the registration page how to achieved it? Which file should i edit for ?

2) In my membership billing section , when I click view to view more payments info of my members, it will showing up a page like this ,
I am wondering how to edit this ms_invoice page format ? I want to modify that invoice alignment. Now it look ugly like this!/158d318b13
I try to disable the widget below the invoice , i disable all the widget of my site but that widget still there, would you might to tell me how to disable that widget which below the invoice?

Have a nice day!