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Buy something, then refund yourself.

A real WooCommerce store wired to a sandbox NMI gateway, with the admin open. Place an order, look at what lands on the order screen, then capture, refund or void it yourself.

Open the demo store Open the admin demo

Sandbox credentials, no real money moves. The store resets every hour.

demo.nmiwp.com

The demo store

A three product shop with a subscription, a high ticket item for ACH, and a normal one off product.

Open the store

Test cards

Standard NMI sandbox values. Any future expiry works unless you want to see a decline.

Number	Brand	Expiry	CVV	Result
4111 1111 1111 1111	Visa	Any future date	999	Approves
5431 1111 1111 1111	Mastercard	Any future date	999	Approves
6011 6011 1111 1111	Discover	Any future date	999	Approves
3714 4963 5398 431	Amex	Any future date	9997	Approves
4111 1111 1111 1111	Visa	10 / 25	999	Declines, expired card

Forcing a decline by amount

The sandbox declines specific totals so you can see the error path. Try an order ending in .05 for a hard decline, and .10 for a processor timeout. The checkout should tell the buyer what to do next, not print a gateway code at them.

The admin side

Read only demo account. Some destructive actions are disabled, everything else is live.

Admin URL

demo.nmiwp.com/wp-admin

Username

demo

Password

demo

Resets

Every hour, on the hour

Place an order with a test cardWatch the card fields load from the gateway rather than from the page, then check the order note for the auth code and AVS result.
Capture a partial amountOpen the order, capture less than the authorized total, and see both WooCommerce and the gateway record stay in step.
Refund and voidRefund part of a captured order, then void an uncaptured one, and compare what the customer would see on a statement.
Save a card, then reorderTick save at checkout, look at My Account, then buy again with the stored token and no card entry.
Buy the subscription productThen trigger a renewal from the subscription screen to see a scheduled charge run against the vault token.
Read the logOpen the gateway log and confirm the card number and security key are not in it.

Rather see it on your own store?

Two options, both free.

Install the free plugin in sandbox

Point it at your own sandbox credentials and test against your real product catalogue and checkout theme. Nothing to buy, no time limit.

Get the free plugin

Book a walkthrough

Twenty minutes, screen shared, with someone who knows the gateway. Useful if you are migrating from another plugin or unsure whether your processor is on NMI.

Book a time

Demo questions

Short answers, since the store is right there.

Is any real money involved?

No. The demo runs against a sandbox gateway. Test cards are the only ones that will work, and real card numbers are rejected before they reach anything.

Can I break it?

Please try. The store resets on the hour, so anything you change is gone shortly after. That is what it is for.

Why does the demo look plain?

It runs a default theme on purpose, so what you are looking at is the plugin rather than a designer’s checkout. The card fields inherit your own styling on a real store.

Which plan is the demo running?

Enterprise, so you can see subscriptions and Level III alongside the free features. The comparison page shows what changes on each tier.

Start free, upgrade when the store needs it.

Install from WordPress.org, connect your gateway, take a real order today.

Download from WordPress.org See pricing