Gambio: Install and connect

What you need to do in advance


  1. Go to Mollie for Gambio releases↗.

  2. Find your Gambio version.

  3. Download the source code file under Assets.

  4. Extract the contents of the file and copy them to the root directory of your Gambio web server using your FTP client.

  5. Go to Toolkit > Cache in your Gambio dashboard and clear the following caches:

    • module

    • output

    • text

  6. Go to icon-puzzle-piece.png Modules > Modules-Center in your Gambio dashboard and select Mollie from the list.

  7. Select Install.

Optional: Install Mollie Payment Surcharge module

If you want to charge your customers an additional fee for certain payment methods, install the Mollie Payment Surcharge module.


Check your local legislation before adding a payment surcharge.

  1. Log in to Gambio.

  2. Go to icon-puzzle-piece.png Modules > Order total.

  3. Scroll down and select Added Modules.

  4. Select Mollie Payment Surcharge.

  5. Select Install.


  1. Log in to your Mollie Dashboard.

  2. Important

    To comply with UK regulations, UK-based merchants have to select a UK-registered organisation to ensure that they use the correct API keys.

  3. Go to More > Developers > API keys.

  4. Copy the API keys.

  5. Go to icon-puzzle-piece.png Modules > Modules-Center.

  6. Select Mollie from the module list and select Edit.

  7. Paste the API keys into their respective fields.

  8. Switch the Test mode toggle on or off.

    We recommend switching it on until you are sure that everything works as you expect.

  9. Select Verify token to confirm that your API keys work.

  10. Select Save changes.