Contact
Get in touch.
Everything is answered by a person, usually within a day or two.
General questions
Email focusspecifictesting@gmail.com. If you are asking whether the materials suit your situation, say where you are applying from and how long you have, it makes the answer far more useful.
You bought something and it hasn't arrived
Check your spam folder first, then email focusspecifictesting@gmail.com with the address you used at checkout. Access will be resent.
You found a mistake
Send the question number and what you think is wrong. If it is an error it will be corrected, and you will get a reply either way.
Press, partnerships and everything else
Same address. Mark it clearly in the subject line.