It seems lost in this conversation, here is my question.

I understand how to link a real bank to Quickbooks. But when I attempt to link my QB checking (which is Green Dot, I get that) I don't have a username and password for Green Dot. I opened the account THROUGH QUICKBOOKS. 

My QB use/pw doesn't work, my Green Dot checking account # combined with my QB pw doesn't work. 

What is the procedure for linking my QB account to my QB checking account when the QB Green Dot checking account doesn't have a user pw?