Where do I find my Google Project ID?

You can find your Google Project ID in your Google API console, go to the Google API console, choose your project from the drop-down selector, and then you will find the project ID in the “Home” screen. If you have not yet set up your Google project, then...

What does the error “Error: redirect_uri_mismatch” mean?

It means that you wrongly copied across the URL shown in your admin console to Google Drive/Cloud at the relevant step. Please return to the relevant step of the instructions (these instructions, for Google Drive, or these ones, for Google Cloud Storage), and try...