Hi Michael,
The problem is fixed. For your information:
I have the jaimeGmasip.com domain redirected to jaimemasip.com.
“home” and “siteurl” tags in wp_options table had “https://www.jaimegmasip.com” value, and I set default_fb_thumb to “https://www.jaimemasip.com/….” using the plugin admin interface. The break just came at the moment a clicked “save changes”.
After read this post https://whatswp.com/how-to-fix-redirect-error-wordpress/
I found the solution, changing “home” and “siteurl” to “https://www.jaimemasip.com” (without G) and the site is working again.
Anyway, thanks for your help.
Regards,
Jaime