If you have all your correct login information but still are not able to login to your my.maxpersuasion.com account this usually is due to cookies or cache.
The first suggestions is for you to clear your browser's history of cookies and cache. If you don't know how to do it you can find instructions here http://www.aboutcookies.org/Default.aspx?page=2
Alternatively, you may try logging in with a Privacy/Incognito window if your browser has one (Firefox, Safari, Chrome). This mode will start you fresh with no cookies.
If this still doesn't solve the issue we recommend you to try a different browser or device. Double check if you don't have any security software that could be interfering.