Am Idoing something wrong

I've had 65 clicks this week which has given me 12 referrals, but of the 15 referrals i have had not one of them has completed his/her profile page, the only problem I can see is that the automated referral letter all of which i've customised are not inserting the referrals name in the name field , so i have sent all of them a follow up letter asking them to complete their free account by writing something about themselves and posting a picture, bit so far none of them have complied - Am i doing something wrong below is a copy of the followup letter.

Dear Shirley

Welcome to Wealthy Affiliates University My name is Ray My Screen-name is Merryman88, I am the member who invited you to the free 7 day test drive, I don't know how you found my Website Twofreewebsitebonus.siterubix.com

but you have hit Gold

This is the best and only site that operates a free Test drive for 7 days, you wouldn't buy a car without a test drive? would you ? well that whats we think !! We have nothing to hide not like some of the other training Platforms.

Our membership is completely transparent absolutely No Hype, No Up-sells,

No BS, No Glittering Prizes, no Obligations, During the trial period you can use all the Tools,Resources, chat rooms, classes everything except the Members Personal message service ( that is available when you become a premium member) but everything else is available for you to try, you can ask other members questions.

Once you have completed your profile telling us something about yourself Posting your profile picture I suggest you start taking action by clicking on the getting started button in the members area.

There on the progress course lessons 1 through 10 you will learn to build your web sites by the end of the 3rd lesson you will have at least one site published and be on your way to a successful on- line business.

Become premium member within the 7 days test drive period and it will only cost you $19 for the next month then each month after will be $47 or if you wish to take advantage of the Heavily discounted yearly membership at $359 that's less than a $1 per day that's Value for you, Just remember Wealthy Affiliates is the best and the only organization of its Type on the internet , Honesty and Integrity are our watchwords and your success is our aim.

Once again Welcome and Enjoy your Journey with Wealthy Affiliates,

Ray Bowley ( Merryman88)

I cant see anything wrong with this letter, its not pushy or intimidating so what is wrong any suggestions please. I am at a complete loss