A Thundra account may be given access to multiple organizations. An organization might have multiple projects and used my multiple accounts. An account might also belong to multiple organizations. The image below explains this situation very well.
Thundra Sidekick - Organizations and Accounts
If you have access to multiple organizations, you can switch between them quickly by using the switch account icon (
). When you click the icon, you will be presented a list of the organizations you have access to. Current organization marked with a check mark.
Thundra Sidekick - Organization Switch
If you switch to another organization by selecting from the list, the application list will show the instances of applications of that organization, and also the title will be changed accordingly: