To switch back to online mode, follow the same instructions and slect Go online.
If you wish to launch Ubisoft Connect in offline mode, you can tick the Always start Ubisoft Connect in offline mode box in the application Settings.
The Ubisoft Connect Desktop App will launch in offline mode automatically if you have no internet connection. This will only happen if you logged into the app before.
Please note that when you run Ubisoft Connect Desktop App in offline mode, some games and services will not be available.
Feel free to get in touch if you have additional questions.