My K-factor is wrong.

Till your age is below 18 and the rating is below 2300 your K factor will be For the players above 18 years of age, once the player played 30 rated games the K-factor will be automatically changed. If there is any other problem, Please let us know your FIDE id and Date of birth

How do I get rating?

For unrated players’ the International Rating can be obtained by playing in FIDE rated tournaments .For criteria and procedure to get a rating kindly see the link: http://www.fide.com/fide/handbook.html?id=172&view=article