No, there is no notice period. You pay for the subscription four weeks in advance. After four weeks you will receive an email from us asking if you would like to extend your subscription. The link in the email will lead you to our webshop where you can extend for another four weeks. If you do nothing, nothing happens: your subscription will end.
If you have asked us to install an automatic transfer, please send us an email as soon as you can. Your subscription will run until the end of the period you last paid for. (So four weeks maximum) After that it stops.