Why my form is over quota?

Hi

http://tmg-mgmt.com/homepage.php?action=become

Here is the problem

What we need to do to fix this problem and get back this form 

I checked your account, and it's over the limit with uploads, so you would have to do one of the following:

1) Remove some of the submissions that have uploads (please be mindful that removed submissions cannot be recovered)

2) Upgrade your account to a higher plan.

Let us know if you have any further questions.

Thank you!