Problem with log in

Hi,Yesterday after installing the program AVG Free for Mac, I can't login with my email and password to connect the program and have the Pro version (payed with my creditcard). I tryed to change the password, the email and re-installed the program but web i try to login it still say me that the password don't match with the e mail. 
Please, what can I do?
Thanks, 
Maudy

Maudy, Mac OS support… Please click on the following link (http://avgclick.me/AVGtechnical) and fill out your details, select as Mac OS then the name of AVG Program that you installed in your device and in description please completely explain about your issue and finally click on the 'Start Chat' option. You will start a live, online chat with one of the AVG agents.
AVG Guru