With this code, you can get access to a group if the manager of the groups shared this code with you.
You need to log in to your Drillster account. Next to your name you can find 'I have an access code', click on this button.
A widget opens, this is the place you can enter your given access code.
This is also possible in the mobile app. To do this, go to 'Subscriptions' and then click on the '+-sign' at the top of your screen to add the code:
The widget is only for temporary access codes. The permanent code is a URL that you can paste into your browser.