Tang Global Digital Systems LLC

We want every reader to feel comfortable with their purchase. This page explains how refunds work for each kind of product we offer.

One-time digital products (Digital $19, Advanced $29)

30-day full refund, no questions asked. Email support@umprotocol.com with your order number and we will process the refund.

One-time phygital products (Phygital Bundle $49)

30-day full refund on the digital portion regardless of the physical product status. The physical product (ceramic mug) refund follows separate timing: full refund if returned within 30 days in re-sellable condition (return shipping at customer expense).

Subscriptions (Daily Boundary Protocol $9/month)

Cancel anytime in one click from /help/ to stop future renewals. Refunds on completed billing periods are case-by-case; contact support. We do not charge cancellation fees.

Personalized products limitation

The PDF is personalized at time of order. A refund refunds the purchase price; we do not delete the generated PDF from your prior emails.

Processing time

1-3 business days from approval to your bank statement.

Contact

support@umprotocol.com