Here are the steps which help to locate the Account ID and Account GUID. Please follow them.
Go to https://portal.clickandpledge.com/
Step 1: Enter the Email Address which is registered for Click & Pledge.
Step 2: Enter the password.
Step 3: Click on Log In to enter into the portal.
Step 4: After entering into the portal, click on Account Info.
Step 5: Click on API Information. In API Information, there will be Account ID & API Account GUID.