Refund policy

Before the study is delivered or access is opened: you may cancel and receive a full refund, no questions asked.

After delivery or access: given the copyable digital nature of the product, payments are non-refundable.

Exception: if a documented material error is confirmed in the verified figures of a version you purchased, you are entitled to an immediate correction plus appropriate compensation agreed directly.

For refunds or questions, contact customer support below and include your purchase email and order reference.

For purchase, download or refund help: sales@topk.agency