Any Adyen terminal that works with the Adyen app will also connect seamlessly with the Countr

In order to configure this, you would first need to follow the steps in manual that came with your Adyen terminal or you could also find Adyen documentation here

NOTE While following the steps to configure the terminal, make sure that you install and sign into the Adyen app on the tablet on which you are using Countr
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Once the Adyen terminal has been configured and works with your tablet you can follow the steps in the tutorial video below to enable it on the Countr