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We typically reply within 24 hours — often much faster. Drop us a message and we’ll get back to you shortly.

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The best way to reach us for orders, refunds, download issues, or any other question.

Email Us Now or write directly to contact@luckvsmath.com

Common Questions

I didn’t receive my download link

Check your spam or junk folder first — Gumroad emails sometimes land there. If it’s not there, email us with your order details and we’ll sort it immediately.

I’d like a refund

No problem — we offer a full 30-day money-back guarantee. Just email us at contact@luckvsmath.com with your order details and we’ll process it right away.

I can’t open the PDF

The book is a standard PDF file. You can open it with Adobe Acrobat Reader (free), your phone’s built-in PDF viewer, or any browser. If you’re still having trouble, email us and we’ll help.

Can I read it on my phone?

Yes — the PDF works on iPhone and Android, on a browser, or in any PDF app. We recommend a PDF reader app for the best experience on mobile.

Is this book anti-gambling?

It’s pro-truth. The book doesn’t lecture or moralise — it explains the maths and psychology behind roulette clearly and honestly. You decide what to do with that knowledge.

If gambling is affecting your life, free and confidential help is available.
GamCare: 0808 802 0133 · BeGambleAware.org · Gamblers Anonymous UK