Plugins don't save changes

Hello,

My plugins don’t save any changes and I am having really troubles specially with language config. Changes are not saved in PAGES editor, but not in content box (I can add text or code there).

These are the plugins I use:
All In One SEO Pack
Contact Form Plugin
Cyclone Slider 2
Polylang
TablePress
WP Google Maps

In italic are marked the ones I think are giving trouble.

The plugins that not save are: SEO PACK (I can edit in the “quick edit” but not inside the page) and POLYLANG. Because both need to be edited inside the page editor.

Do you know what is going on?

Now my problem:

The thing is; I want to translate my default language (CATALAN) to Spanish. I used Polylang.

The thing is, when I try to create a translation of let’s suppose “home in catalan”, Polylang adds the ID on the page in order to recognize the new page is a translation of the first one. If this worked properly, I will see first “home in catalan”, then I click in spanish flag, and I see “home in Spanish”.

So, that’s not working. When I click to the flag, “home in catalan” don’t switch to “home in spanish”, because don’t associate the pages ID, because don’t save changes in plugins (although the page is created ok).

We tried to redirect http://www.domain.com/es to the “home in spanish”, then works. But flags only switch between homes, not page by page in the menu. Furthermore, now don’t consider CATALAN as main page, gets the spanish, and I think it is because the redirect.

Thanks to everyone.