Contact us
Email is the fastest way to reach us and reaches the owner directly.
- Response time
- Within 48 hours, usually much sooner. Email is monitored seven days a week.
- Xiaohongshu
- @QuantQns · Direct messages work too, but email gets a faster reply.
- Business details
- QuantQns
Singapore
What to email about
- Billing and subscriptions. Include the email address used at checkout. Cancellation is self-service from your account, but we can help if something looks wrong.
- Access problems. If a subscription you paid for is not showing, email us — we can see the payment and fix it manually.
- Corrections. If a solution is wrong or unclear, tell us which question and what is off. These get fixed quickly.
- Privacy requests. Access, export, or deletion of your data.
QuantQns is run by one person. That means replies come from someone who knows the content, and it also means responses may take a day or two during busy periods.