License & devices

Each paid license family allows two physical Macs. Verify your purchase email with an eight-digit code on the device-management page, review your registered Macs, and deactivate an old one when you need to free a slot. The next Mac is activated in Duvrin itself.

No. Annual is a USD 5 one-time purchase for 365 days, with manual renewal. Lifetime is a USD 10 one-time purchase with no license expiry. Both plans include the full app and two physical Mac slots, and nothing is charged again unless you choose to buy again.

Downloading needs a connection to the file source. Paid activation also requires internet access, and paid installations must reconnect for permission renewal at least every seven days. Annual permissions cannot extend beyond the annual access deadline. A trial keeps its own 30-day deadline and does not follow the paid seven-day interval.

Paying and activating are separate steps, and the purchase only reaches the app once you redeem it. Find the activation code in your Duvrin email, open Registration, enter your purchase email and the code, then choose Validate. If your details are already filled in, choose Enter a different code first. Do not buy a second license to correct this.

No. The receipt records your payment. The activation code arrives in a separate email to the address used at checkout, titled with your Annual or Lifetime plan. If that email is missing, search the purchase inbox, Spam, and Junk. If it truly never arrived, contact support with the purchase email and order reference rather than purchasing again.

Yes. Verify your purchase email through device management, select Recover activation code for the relevant license, and explicitly confirm replacement. The email contains a new code; your previous code stops working for new activations. Recovery never adds paid time, restarts a trial, or creates extra Mac slots, and registered devices remain allocated.

Each paid license family covers two physical Macs. To free an old Mac’s slot, choose Deactivate beside it in device management, then install Duvrin on the new Mac and validate with your purchase email and current code. If both slots are full and you activate another Mac directly, Duvrin asks you to confirm which Mac to replace. Read that carefully, and use device management instead if it is not the one you intend to remove.

Check the address used at checkout, then Spam and Junk. A payment receipt and an activation email are different messages, so having the receipt does not mean you have the code. For a verification request, use the latest unexpired code from the flow you are in, or resend it there. Never send an activation or verification code to support.