No content on text editor after migration

I’ve migrated a WordPress from one host to another using the same URL.

The content is there, somewhere but there, and if you go to the blog all looks fine (https://sadar.thefrutos.com) but when you try to edit a page or post there is no content in the editor only the title. (https://www.dropbox.com/s/u81x2fffi6vut38/Captura%20de%20pantalla%202015-08-31%2009.25.01.png?dl=0)

If I click on Builder >> SEO option the content is duplicated (https://www.dropbox.com/s/ymdbwacpsr4g5cy/Captura%20de%20pantalla%202015-08-31%2009.26.08.png?dl=0) but the number of words counter is still 0.

I have change the theme, disable all the plugins, install google libraries, etc but nothing. I’ve been looking for errors, warnings, etc but I didn’t find anything.

Anybody have suffered the same problem? Thank you