By default qbase+ requires a working internet connection but you can work offline for a predefined amount of time.

When you're license was created the maximum offline use time was automatically set to 1 day. This setting can be changed in your personal account, however I can't go beyond the end date of your license.

Request offline usage

Click the "work offline" menu item and select the duration

Keep in mind the license server will regard this as an active session.  If you have a normal basic or premium license you will not be able to start qbase+ on another computer.

Stop working offline

If you want to stop working offline before the requested duration has ended click the "work offline" menu item once more & select "release license and exit".