What happens at checkout

Payment clears, the download links appear on the confirmation page, and the same links arrive by email within a minute. There is no account to create and no app to install.

What you receive

Two files: a PDF laid out for reading and printing, and an EPUB for phones and e-readers. One purchase covers both.

How long the links last

Download links stay live for twelve months and work on any device you own. If a link expires, email us and we reissue it free, without asking for a receipt.

If the email does not arrive

Check the spam folder first, then email hello@zentesto.online with the address you bought with. We reissue the links the same working day.

If a file will not open

Tell us which device and which reader you are using. We will send a version that works or refund you, whichever you prefer.

Last updated

4 November 2026