In this manual you'll find out what the purpose of the link between Mollie and Akti exactly is.
First of all you need to set up something correctly in the Invoicing module at the Settings Invoice Settings. Click here on Invoice web link at the advanced settings.
Here you can now activate Mollie as payment gateway by means of the slider. In the weblink of invoices you'll then have a payment button which allows you to pay these invoices via the Bancontact app.