Hello Veronica,
I'll be pleased to reset the limit of the machines registered under your account. To do this, please send us an email including your contact email address of your account, from here: http://www.intel.com/partner/support/appup/contact.htm
To send us an email from Intel AppUp® center client, simply click on the ‘Help’ link (bottom right edge). From the Intel AppUp® center Support Community you can select the "Live Support Chat" bottom from the Actions menu (upper right) to initiate real-time support session with our technicians.
Looking forward to hearing from you.
Regards,
Marvin O.
Intel AppUp® center Support