To change the package, go to your Account settings via the cogwheel at the top right and click on Up- or downgrade your plan under "Your Plan".
The change can be made both “upwards” (e.g. from Premium to Professional) and downwards (e.g. from Premium to Basic). During your first 30 days with us, the change is completely non-binding anyway, but even after that we calculate the premium on a daily basis. This means that you do not have to switch at the end of the month, for example.
If you only want to look at the different functions once, you can also switch and switch back on the same day, in which case we won't charge you for the larger package.