Hi Alvaro,
At the button’s properties, you have the option to check or uncheck the field “Enabled by default”.
This filed determined the button’s status each time the page loads.
By unchecking the field, the button’s status will be “disabled”.
In order to preserve the buttons’s enable status,
use the wix- storage to save a boolean variable that represent the desirable enable status.
At the $w.onReady( function () {} , get the variable’s value from the storage and change the buttons’s status
accordingly.
If you need help with your code we will be glad to assist you.
Have a nice day and best of luck!