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Contact
Have a question about an exercise, a problem with your program or a partnership idea? Email us and we will reply within 2 business days.
Program purchases
If you bought a program and cannot access it or download the PDF, email us from the address you used to pay and tell us which program. We will send it to you manually.
Mistakes and suggestions
If you spot a mistake in an exercise, an outdated price or something missing, let us know: we read every message.
Site owner
Iker Iglesias · Durango (Bizkaia), Spain · Legal notice