Hello.
When I go to connect he tells me that I have already used all the unlocks for this week, and that is not true, I have not used them.

My username: KAMICABRON

Can you help me?

Hi. If not you, someone else surely used your account to unlock LFS. Those unlocks don't just evaporate. More info about unlocks and when you'll get your next one: https://www.lfs.net/faq/33

Quote :

How often can I unlock?
Initially you will be granted 3 unlocks. In addition, you get an additional unlock available every friday, provided you do not already have 2 unlocks available. So unless you are having severe problems with your computer, you should be fine and always able to unlock LFS again after a reinstallation of Windows for example, or when you buy new computer parts or a whole new computer.

When you unlock the game, you get a confirmation email about the event (which also contains some info, like the IP used for the unlock and the location) so you should be able to figure out where did those unlocks go.

Go to your email, don't forget to check your spam folder as well.