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Setting Up Your PAX A800 Terminal in rezStream Cloud

This guide will walk you through the setup process for pairing and enabling your PAX A800 Shift4 payment terminals in rezStream Cloud. Once configured, you’ll be able to process payments seamlessly with swipe, dip, or tap.

Before starting, make sure you have:

  1. Your Shift4 terminals (powered on)

  2. Access to rezStream Cloud 

  3. Reliable Wi-Fi connection (recommended over cellular for setup)

  4. Terminal serial numbers (printed on a sticker on the back of each device)

Step 1: Power On and Connect Terminals

  1. Ensure each terminal is powered on.

  2. Connect the terminals to your Wi-Fi network.

Step 2: Add Terminals in rezStream Cloud

  1. Log into rezStream Cloud.

  2. Navigate to: Configuration → Payment Settings → Credit Card Processing.

  3. Enable Credit Card Terminals 

    1. Toggle Enable Credit Card Terminals to Yes

      1. This determines whether credit card terminal options are available when collecting card information.


  4. Set Card Present by Default (Optional)

    1. Toggle Use Card Present by Default to Yes.

      1. This makes credit card terminals the default method of collecting card information.

  5. Enable Cloud Terminals
    1. Toggle Use Cloud Terminals to Yes.
      1. This allows the use of web-based credit card terminals.

  6. Configure Auto Print Receipt
    1. Set Auto Print Receipt to one of the following:
      1. Disabled: No receipt will print automatically.
      2. Customer Copy: A customer copy will print automatically.
      3. Merchant Copy: A merchant copy will print automatically.
  7. Manage Terminals
    1. Click Manage Terminals to configure and review your available terminal devices.
  8. For each device:
    1. Manufacturer: Select PAX
    2. Serial Number: Enter the number found on the back of the device (starts with 221…)
    3. Terminal Name: Assign a descriptive name (e.g., Front Desk, T1, Poolside)
  9. Repeat for all devices. 

Step 4: Refresh Browsers

  1. On any computer currently logged into rezStream Cloud, refresh the browser so the system recognizes the new terminal settings.

Step 5: Test a Transaction

  1. Initiate a test payment in rezStream Cloud.

  2. The system will prompt you to select a terminal (if multiple are paired).

  3. Run the transaction using swipe, dip, or tap.

  4. Confirm that the payment processes and a receipt prints (based on your chosen settings).

Step 6: Refunds and Voids

  1. Voids: If a payment has not yet been batched, use Void.

  2. Refunds: If the payment has been batched, use Refund.

  3. To issue a refund:

    1. Open the Invoice screen.

    2. Click the Refund button (between Pre-Auth and Payment).

    3. Choose the amount and process via swipe, dip, or tap.

FAQs

Terminal Setup & Use

  • Multiple terminals can be connected, but only one type (Shift4 vs. legacy) can be active at a time.
  • Old swipe-only terminals are automatically disabled once cloud terminals are enabled.
  • Terminals are not tied to a specific computer. Once paired to your account, they can be used from any device logged into rezStream Cloud.
Payments & Cards
  • Debit cards: Terminals will accept debit if your Shift4 account is configured for them. Please confirm with Shift4 if you’re unsure.
Receipt Paper Details
  • Width: 2 ¼ inches (2.25" / 57 mm)
  • Roll diameter: Up to 50 mm (~2 inches), which typically provides 50–60 feet of paper depending on thickness.
Timeout Behavior
  • Sometimes the payment terminal and rezStream Cloud don’t time out at the same speed:
  • rezStream Cloud will stop waiting after 65 seconds without a response from Shift4.
  • The terminal may still appear active while you’re retrying (swipe, dip, tap) or switching to manual entry.
  • Important: If this happens, rezStream Cloud will show an error and end the transaction. Do not continue collecting payment on the terminal. Cancel the attempt instead. If you proceed, the payment may process on the terminal but will not be recorded in the PMS.

 

If you encounter issues or have questions during setup, contact rezStream Support. Be sure to provide details on the terminal used, transaction type, and any error messages.