Create a Gmail account if you don't have one to pay using Google Pay. Use this link to sign into Google Pay or create an account: Google Pay
Click on "Send or request money" and enter the information as below (Note: Your amount may vary between $10 and $5 depending on which membership you choose.
For a list of memberships and benefits click here)
Click on Send
Make sure you enter your first name and last name in the Memo section.
After you have paid, you will receive a payment confirmation in the form of a receipt in your email which will look like the image below.
Take a screenshot of this receipt using [Alt + PrtScn] for Windows or [Cmd + Shift + 3] for Mac.
Upload this screenshot on your ACM membership application in the last step.