To link a Codabox account to your Akti account, go to the "Integrations" submenu under the Settings module.
After you have clicked on the logo, a pop-up will open. Here you can fill in your VAT number and click on "Request token". If your VAT number is known at Codabox, you will receive an email with a code. You can enter this code in the pop-up to activate the integration.