Support

Email: support@dupproof.com (activates with the domain launch). Until then, everything below resolves the common first-run questions.

I paid — where is my licence key?

Keys are issued per device: install the trial, copy your device code from Dashboard → Licence, and email it with your Polar order confirmation to support@dupproof.com. We reply with your signed activation key. If you reinstalled your OS or changed computers later, the same route gets you a re-issue.

Windows says “Windows protected your PC”

This release is not yet code-signed. Confirm you downloaded from this site, verify the checksums in the bundle, then click “More info” → “Run anyway”. Code-signing is planned for the next release.

macOS says the app “cannot be opened”

Right-click start.sh/the app → Open → Open. This one-time step is required for unsigned applications.

My trial expired — did I lose my data?

No. Expired installations are read-only: browse everything, download reports, and activate a key at any time to continue exactly where you left off.

I reinstalled my OS / changed computers and my key stopped working

Licence keys are bound to a device code derived from your machine. Contact support with your licence ID for a re-issue.

My columns are not recognised on import

Use the mapping screen to assign Vendor / Invoice no. / Date / Amount once — the mapping is saved per company and reused automatically for files with the same headers.

Semicolons in my CSV?

DupProof reads comma-delimited CSV and XLSX. Re-export semicolon files as comma CSV (Excel: Save As → CSV UTF-8) — or simply save as .xlsx, which is fully supported.