You can set up your Mollie card reader(s) either as part of the app setup or afterwards via the app menu. You can find the corresponding option under Settings → Card Reader → Add Card Reader → Connect Mollie Terminal.
To do this, you first need to log in with your Mollie account.
Log in with your credentials.
Select your Mollie profile. You can configure this in advance in your Mollie account.
In the next step, select your terminal. You can manage and rename your Mollie terminals in your Mollie account. Then click on Complete Setup.
Your Mollie terminal has now been successfully connected.