Below we will show you how to log into your Quick Books Online account and get your Company ID.
Go to https://qbo.intuit.com/login
Log in with your user name and password
Once logged in, Click GEAR (TOP RIGHT BESIDE HELP BUTTON) , THEN ACCOUNT / SETTINGS
Click the BILLING & SUBSCRIPTION tab (2nd Down)
Your QuickBooks Online Company ID, will be on the top line.
The ID usually will be shown with spaces between the numbers, sample: 1234 1234 1234 1234