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Gumroad checkout not working: which step fails
Buyers press your buy button, and the checkout never opens, spins or stops with a message. Mimiq opens the same product as a simulated buyer, through your site and through the direct link, and shows which path fails.
Why does my Gumroad checkout not work for buyers?
When the product page works and the checkout does not, the cause is usually the path a buyer takes to get there. A buy button copied onto your own site can be blocked by a browser, an ad blocker or a script that interferes, while the direct product link may open without trouble. A simulated test runs both paths and reports the step where each one stopped, including an option that cannot be bought.
What this looks like in a report
“I press buy and a grey box spins and never fills. The same product opens from the link in the email. I would rather buy from the link than from a button that hangs.”
The fix. Replace the copied buy button with a plain link to the product, or confirm the checkout frame loads with no ad blocker, and make sure every option you sell has a price. Then press the button in a private window and confirm the payment step appears.
An illustration. Run a test to see your own.See a real sample report
The buy button can open a checkout the browser refuses to show
A buy button on your own site often does not hold the checkout itself. When a buy button opens the checkout inside your page, the checkout often loads as a frame from the seller's system. Browsers and ad blockers can refuse to load that frame, and a privacy setting can block the cookies it needs. The buyer sees a button that spins, a blank box or nothing at all, and no error appears on your page. The same product at its direct link may work, so the failure looks random when it is really about the path. Check both paths in the same browser before you change any product setting.
- Press your buy button in a private window with no extensions. Does the checkout open?
- Open the product's direct link in the same window. Does it reach the payment step?
- Turn on your usual ad blocker and press the button again. Does the checkout still appear?
- Choose each option the product offers. Does any option fail to show a price?
- Confirm the product is published and that no limit you set on sales has been reached.
Two paths to the same product, and where they differ
A buyer can reach your product through the direct link, which opens the seller's own page, or through a buy button on your site. The two paths share the product and the price, but they do not share the page around them. The button path runs through your page's scripts, your cookie settings and any frame that your site loads. A buyer on a phone, a buyer with a blocker, and a buyer who has blocked third-party cookies all meet the button path differently from the direct one. That is why a team can test the product from its own logged-in browser, see it work, and still lose buyers who arrive through the button.
What each failure looks like from the buyer's side
A spinning button or a blank box after pressing it points at the frame: something blocked it, or it never finished loading. An error that appears only after an option is chosen points at that option, which may have no price or be set up wrongly. A button that does nothing at all, while the direct link works, usually means a script on your page is stopping the click. A product page that shows but whose link returns a missing page means the product is unpublished, or the link changed after you copied the button. Each one can be told apart in the same browser without changing a setting.
Each option is its own path to payment
The option matters as much as the path. A product sold in more than one version, such as a standard and an extended license, gives each version its own price and its own way to payment. A walk that always picks the first option only proves that one price works. Run the walk once per option, and compare the price the checkout shows with the price on the product page each time. A broken option shows up as a missing price, or a total that differs from the one the buyer saw.
A simulated buyer chooses the option you tell it to, presses the button, and follows the checkout to the payment step. The walk stops there because a buyer cannot pay with a real card in a test. A card decline, a bank check or the receipt email come after that step, so check them yourself with your own payment setup. The walk tells you which path and which option reached the payment step, and which did not. It does not tell you how many buyers would finish paying.
Mimiq is independent and not affiliated with the platforms it names. Names belong to their owners.
What you get with Mimiq
- 01
Run it by hand, or on every pull request
Paste a link and a task in the app and watch the visitors work. Or run them on every preview deploy: the GitHub Action comments on the pull request, any other CI can call the MCP endpoint, and your coding agent can run it too.
- 02
Bugs and usability problems in one report
The browser records errors and failed or slow requests on the step they happened. The visitors say where the wording or the steps confused them, and where they left.
- 03
Visitors that behave like your audience
Each visitor is a different profile with a reason to be there, matched to who the page is for, described by you, or built from your own customers.
- 04
A prompt to fix each problem
Every problem comes with a fix to paste into Cursor, Claude Code, Lovable or any coding agent, and one prompt hands over the top problems at once. Then send the same visitors through again.
- 05
Follow every visitor
See each visitor's whole path, step by step with screenshots, and what it was thinking at every step. Ask any visitor a question.
The browser records relevant JavaScript errors and failed or slow app requests encountered during the run, attached to the step where they occurred. The visitors are simulated: they find problems, they do not predict how many real people will convert.
A renamed product can leave a copied buy button pointing nowhere
A product that is renamed, unpublished or given a new link can leave a copied buy button pointing at nothing. Each change to the product, its options or its price needs a fresh walk through both paths. Send visitors from your newsletter link and from the site button, since a buyer may use either one. If the product sits behind a membership, give the visitors a test account to sign in with.
Starter
Try it on one launch
About 4 tests of 5 visitors
- Visitors on your landing page, signup and checkout
- Where they left and why, with a fix to copy for each problem
- Run it in the app or on every pull request
- Ask any visitor a question, included
- Test accounts and protected previews
Builder
Test every build
About 20 tests of 5 visitors
- Everything in Starter
- Credits refill each month, and what is left rolls over once
- Cancel anytime
Pro
Test every release, as a team
About 60 tests of 5 visitors
- Everything in Starter
- Credits refill each month, and what is left rolls over once
- Cancel anytime
Scale
Test at scale, every day
About 240 tests of 5 visitors
- Everything in Starter
- Credits refill each month, and what is left rolls over once
- Priority support
- Cancel anytime
Questions
Why does the buy button work on my computer but not for buyers?
Your computer may have no ad blocker, a saved cookie or a logged in session that a buyer does not have. A buyer on a fresh browser, a phone or a privacy mode can get a different result. Test in a private window with no extensions, then in a window with your usual blockers, and compare. The difference tells you whether the browser or the product is the cause.
Will the test show whether buyers will complete the purchase?
No. The test shows whether a simulated buyer can open the checkout and reach the payment step. It does not predict how many real buyers would pay. Use your sales data or a live experiment for conversion rates, and use the walk to find the path that never reaches payment.
Can the test pay with a card?
No. Visitors cannot pay with a real card, and the test does not enter one. A card decline, a bank check or a payment confirmation is something you test with your own payment setup, after the walk shows that a buyer reached that step.
What if the product has several options?
Each option is a different path to the payment step, and a broken option looks like a broken product. Tell the test which option to choose, and run each one separately. Start with the option you promote most, then the cheapest and the most expensive, so a single broken price does not hide the rest.
Can I test a product that is not live yet?
Only if the product has a public address. The test opens the link a buyer would open. An unpublished product shows the buyer nothing, and the report records that as the step where the walk stopped.
Keep reading
Send visitors and see what breaks first.
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