Find answers to frequently asked questions concerning backers and pledging in here:
https://www.kickstarter.com/help/faq/backer+questions?ref=faq_nav#BackAProj

To pledge to a project, just click the green “Back This Project” button on any project page. You will be asked to enter your pledge amount and select a reward tier. If you select a reward that involves shipping, you'll be prompted to include this additional amount in your pledge.

For US-based projects, you will go through the Amazon checkout process. For projects launched outside of the US, you will check out through Kickstarter. To complete a pledge towards any project, you'll need to have and be logged in to a Kickstarter account.

If the project you’re backing is successfully funded, your card will be charged when the project reaches its funding deadline. If the project does not reach its funding goal, your card is never charged.

If you've backed a project that is still live and are seeing a charge on your bank statement, what you are likely seeing is a temporary authorization of funds. The time it takes for an authorization to clear varies on the bank, but typically takes 1 - 3 days. You will not be charged until the project you backed has ended successfully.

If you have questions or want to reach out to a project creator just click on the 'Contact me' button on the project page.
You can also reach as at info@soffamag.com