Feb 24, 2018 06:27:43 PM by Awais A
Feb 25, 2018 04:27:22 AM by Avery O
Hi Awais,
You should be able to add your credit card (regardless if it's a master or visa card) as a billing method. You may read this post for more information on billing methods on Upwork.
Let us know if you are going through any issues with trying to add your billing method.