Multiple projects connection
Problem
Incorrect disconnect for multiple projects connected to one application
Solution
If you have multiple projects connected to one application, than you will disconnect one of them you will see that other projects is looks like connected, but it is not (see attachment)
In this case you should follow this steps:
Click on Disconnect button
Save config
Connect to your QBO application again
This issue is fixed in latest version of QuickbooksBasic extension.