To activate the integration with Mollie, you must have an existing Mollie account and generate an API password to make the link.
To link your Akti account to Mollie, go to the "Integrations" submenu under the Settings module and then click on Mollie.
In the pop-up that opens, you now need to enter the API key that you created in Mollie. Next you can click on "Activate". Afterwards you can also choose to deactivate the application again.