Some advanced warning - If you have a Facebook widget on your website, a "Like us on Facebook" logo, or a variation of it as from June 2015 these will stop working unless you make a change to your website.
Facebook now require you to use their new official plugins in place of the existing ones. These can be found at
https://developers.facebook.com/docs/plugins/page-plugin You will need to fill in the details and copy two sets of code into your website.
If you are not used to adding code, you will need to contact your web developer or Empresa to help you with this or to carry out the work for you.