Below are steps required for new google accounts before adding/using them in GBloggerBuilder for the first time.
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1) In your web browser log into https://mail.google.com with the user details of the new account.

2) In a new tab in the browser log into https://www.blogger.com/ for the account.

Enter a Blogger profile name for the account then click Continue to Blogger




3)
On the next page click the link Revert to legacy Blogger




4)
You'll then see this screen and the account is now ready to use in GBloggerBuilder




5)
When you run GBloggerBuilder using the new account in most cases you'll see a Security email in gmail so switch back to the gmail tab in your browser and click on the Security email to open it,




6)
On the next screen click Check activity




7)
Then click Yes, it was me





After those steps your GBlogger project will run smoothly with the new account.
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