The number one reason for the contact form not working is because the email being used to recieve the emails at is blocking it as spam. If you tried the contact form and you did not get the email, please try a couple more different email addresses and research your email setup before contacting support to be sure it isn't your email. If you contact support on ktools about it, that is all we will be able to do anyways, we will change out your stores email addresses with our own and test it.
The second issue and it is very very rare is that the hosting you are on may not allow PHP mail() function. If that is the case (you will have to ask your hosting to find out), then you will need to log into your manager and go to settings -> software setup -> mail setup and setup the SMTP method.