Thank You @subratamal, You are really a genius by making that such type of Plugin. Yeah you are right it was a woocommerce version problem. I just Updated it to 3.2.6 and BINGO, wallet is working now. I really appreciate your appropriate Help. Please keep doing these type of great jobs.
Once again Thank You for your help.
Hello @subratamal,
I am using WooCommerce version 2.6.8 right now. I hope you have a solution for it.
There are some of the information you will need.
WC Version: 2.6.8
WP Version: 4.6.9
PHP Version: 5.4.45