Help

LAST UPDATED 19 OCTOBER 2026

Shipping, returns, promo codes, payment, downloads and accounts, in one place. Anything not here: oiyiproject@gmail.com. A person reads every message.

Shipping

Physical items ship to addresses in the United States only. Software is a download, so there is nothing to ship.
Your order is packed and shipped by Kami, from Virginia, by USPS.
The cost is calculated at checkout from your ZIP code. You see USPS Ground Advantage and USPS Priority Mail with the live price of each, and you choose. If a price cannot be worked out, checkout says so and does not take payment.
Tracking is emailed the day it ships.
If an order cannot ship within 30 days of payment, you are told, and you may cancel for a full refund to the way you paid.
No sales tax is added at checkout. Prices are in US dollars.

Returns and refunds

Software: all sales are final, as the terms say. A licence or download that does not work on the Mac the product page says it runs on is fixed or refunded. Write within 14 days with your order reference.
Physical items: an item that arrives damaged, defective or not what you ordered is replaced or refunded. Write within 30 days of delivery and attach a photo of the item and the packaging.
For anything else, such as the wrong size ordered, write in. A person looks at it.
Refunds go back to the PayPal, Venmo or card you paid with.

Enter a code in the cart before you pay.
One code per order. Codes cannot be combined.
A code has no cash value and cannot be exchanged for money.
A percent or dollar code comes off the items before shipping is added. A free-shipping code takes the shipping charge off.
An expired code does not apply. A code that has run out, or that needs a larger order, tells you so at the cart.

Payment

PayPal, Venmo and cards, all through PayPal.
Card details are typed into PayPal's own fields and go to PayPal. OIYI never sees or stores card numbers.
If a payment is declined, cancelled or expires, nothing is charged and your cart stays.

Downloads and licence keys

Software is sold through Polar (polar.sh), OIYI’s checkout for software. It takes the payment by card, adds sales tax or VAT where it applies, and emails your receipt, your licence key and the download link right away.
Your key and download stay in your customer portal. Sign in there with the email you paid with.
One key activates 2 computers. On each computer every format (Audio Unit, VST3, the app) shares the one activation. Updates within the version you bought are free.
Each product page says which macOS and which Mac it runs on. Free products are there to try OIYI first.
Lost a key or the download? Your customer portal has both. Or write in with the email you paid with.

Install and activate

Open the download (a .dmg) and double-click Install. It puts the Audio Unit, the VST3 and the standalone app where your music software looks for them. Under Customize you can leave a format out.
If macOS says the installer can't be opened: System Settings, Privacy & Security, scroll down to Open Anyway, then your Mac password. This is needed once.
Open the plug-in in your music software, or open the app. The activation screen asks for your licence key.
Copy the key from your purchase email (or your customer portal), paste it into the field and click Activate. If the field does not take the paste, just click Activate: it reads the key you copied. This needs the internet once.
Moving to another computer: choose Remove from this computer in the product, or Manage computers in your customer portal, then activate the new one.

That is all. After that it works offline: it re-checks now and then when you are online, and keeps working for up to 30 days without the internet. Every music program on that computer shares the activation. Until a product is activated, an effect lets the sound through unchanged and an instrument stays silent. Read Me.pdf in every download has the same steps and where each file goes.

Accounts

Guest checkout is the default. You do not need an account to buy.
This browser remembers your recent orders, so a confirmation can be reopened here. Clearing your browser's site data removes that memory. Your receipt email always carries the order reference.
If you make an account later, orders made with the same email are added to it once you confirm that email.
In an account you can save delivery addresses, see your orders and keys, and delete the account. The privacy page has the detail.
Software bought through Polar lives in your Polar customer portal (key, download, computers), not in your OIYI account.

Questions

Do I need an account to buy?

No. Guest checkout is the default. You give an email for the receipt and, only when something ships, a US delivery address. An account is optional and can be made later.

Where is my licence key?

In the email from Polar right after you pay, and in your customer portal at polar.sh/oiyi/portal (sign in with the email you paid with). If it is missing, write to oiyiproject@gmail.com with your order reference.

How many computers can I use a licence on?

2 at a time. Free one in the product (Remove from this computer) or in your customer portal (Manage computers) to move it. Updates within the version you bought are free. Please do not share or resell keys or installers.

Do you ship outside the United States?

No. OIYI sells to buyers in the United States only, in US dollars. Software is a download, so there is nothing to ship.

When will my order ship?

Tracking is emailed the day it ships. If an order cannot ship within 30 days of payment, you are told and may cancel for a full refund.

Can I return something?

Software sales are final, but a licence or download that does not work is fixed or refunded. A physical item that arrives damaged, defective or wrong is replaced or refunded. Write in within 30 days of delivery, with a photo. The Returns and refunds section of this page has the detail.

How does a promo code work?

Enter it in the cart before you pay. One code per order, codes cannot be combined, and a code has no cash value. A percent or dollar code comes off the items before shipping is added. A free-shipping code takes the shipping charge off. An expired code does not apply.

Is my card safe?

For software, card details are typed into Polar's checkout and go to its card processor; for the tee and other shipped things, into PayPal's own fields. OIYI never sees or stores card numbers.

How do I delete my account or my data?

Account, then Settings, then Delete account. Or write to oiyiproject@gmail.com and a person handles it. The privacy page says what is kept and why.

Contact

Write to oiyiproject@gmail.com. Please include your order reference (it is in your receipt email and on the confirmation page) and, for a damaged or wrong item, a photo.