Here is Kickstarter's recommendation on how to make a pledge:
Here are Kickstarter's common pledge problems:
You will not be charged unless our project is fully funded on March 14, 2020.
Use your email address and a password to create an account, this will help us stay in contact with you when our project funds!
We will send out a survey to all backers asking for their shipping information once we fund! Kickstarter does not give us your address so we cannot send you unwanted mail ahead of funding! :)
Don't see the answer to your question? Ask the project creator directly.