Create Connection in adtribute
Open the adtribute App.
Go to "Connections" and click on "Create Connection".
Search for "Digistore24" and select it.
Name the Connection as you like, e.g. the Account Name.
Now you need to get the API Key from Digistore.
Retrieve API Key from Digistore
Login to Digistore.
Go to the vendor view at the top bar.
Click "Settings" top right and select "Account access".
Switch to the tab "API keys".
Click on the button "New API key".
Enter a Name.
Select "Read access" as the "API permissions".
Leave everything else as it is and click "Save".
Copy the API Key and paste it into the according field in the adtribute app.
Complete Connection
After you have pasted the API Key, just click on "Next". It will load for a short bit and tell you on the bottom right if the Connection was successful and show up within your Connections.
You have to repeat those steps for every Digistore account, you wish to connect.