Flitt (Fondy) — card payments for WooCommerce

Flitt (formerly Fondy) for WooCommerce is a payment plugin that accepts Visa/Mastercard, Apple Pay and Google Pay payments through a secure Flitt (Fondy) page. Once the customer pays, Flitt sends a signed server callback to the plugin’s REST webhook, which verifies the SHA1 signature and sets the order to the right status itself. No manual “was it paid or not” reconciliation — an order is confirmed only once the money has actually gone through.

Fondy is now Flitt. The acquirer changed its name and domain: the payment page runs on pay.flitt.com, while the old pay.fondy.eu no longer responds. The plugin has been moved to the new API, but the payment method id, settings, licence key and payment log stayed the same — updating resets nothing.

Currencies. Flitt accepts GEL, USD, EUR, AMD, AZN, KZT, MDL and UZS — merchants in Georgia, Kazakhstan, Uzbekistan, Moldova and Armenia. The Ukrainian hryvnia is not on that list: if the shop currency is unsupported, the payment method simply is not shown at checkout. For Ukrainian shops we have a separate Hutko plugin.

How it works, step by step

1. At checkout, the customer chooses “Card payment (Flitt)” and places the order. Both the classic and block (Gutenberg) checkout work.
2. The plugin builds a signed request and redirects the customer to a secure Flitt payment page — card, Apple Pay or Google Pay.
3. After payment, Flitt sends a server callback to the wc-fondy/v1/webhook REST route. The plugin verifies the SHA1 signature and sets the order to “Processing” or “Completed”.
4. When the customer returns to the site, the status is additionally reconciled via the Status API — the order is only completed once the transaction is genuinely successful.
5. With Pro: in two-step mode, funds are only held (preauth) and are captured automatically when you move the order to “Completed”. Refunds — full or partial — are made from the order screen or the log.

How much it costs

890 UAH — a one-year licence. A year of updates, technical support and access to all Pro features. No auto-charges: renewal is always manual, and we never store card details.

You can take a longer term straight away — the longer it is, the cheaper each year works out:

• 1 year — 890 UAH
• 2 years — 1,690 UAH (−5%, 845 UAH per year)
• 3 years — 2,350 UAH (−12%, 783 UAH per year)
• 4 years — 2,920 UAH (−18%, 730 UAH per year)
• 5 years — 3,340 UAH (−25%, 668 UAH per year)

Once the term expires, only updates and new features stop — Pro features keep working, the free version keeps running, and your settings and data don’t go anywhere. To reopen Pro, simply renew the licence in your account. We’ll remind you by email 14, 7, 3 and 1 day before it ends.

One key — two sites: your store and a staging copy. Moving the shop, deactivate the licence on the old domain and activate it on the new one yourself, without contacting support.

Trial first, then payment. The free version doesn’t turn anything on by itself: Pro features are visible in their usual places with a “Pro” tag, and the 7-day trial only starts once you click “Try Pro for 7 days” and enter your email — a real licence key is sent to it. The payment log, preauth and refunds can be tested on your own shop before you buy. That’s exactly why refunds after purchase aren’t offered — you see the module at work before you pay.

Under the hood

• The secret key is encrypted in the database — the encryption key is derived from that specific site’s WordPress salts, so settings copied to another site can’t be decrypted.
• Double payment verification: a signed server callback plus a Status API reconciliation on the customer’s return — a forged request can’t change the status.
• server_callback_url is sent with every payment — nothing to enter manually in the Flitt account.
• Block checkout is supported via a dedicated integration (WooCommerce Blocks), not a legacy fallback.

How to install

1. Download the zip via “Plugins → Add New → Upload Plugin” and activate it.
2. Open “WooCommerce → Settings → Payments” and enable Flitt.
3. Leave “Test mode” on for testing — the plugin works right away on the public test merchant, no agreement needed.
4. For live mode, turn off test mode and enter the Merchant ID and secret key from the Flitt account.
5. For Pro, after purchase enter the licence key from the email → “Activate licence”.
6. Updating from an earlier version: upload the new zip the same way — WordPress will offer to replace the plugin, and the settings, licence key and payment log are preserved.