It is no problem to fix this type of problem with WPGlobus for themes that don’t support multilanguage completely. They have a special addon for this (www.wordpress.org/plugins/wpglobus-translate-options/) but I was hoping you could fix those problems in the theme.
Anyhow I used this addon now (http://5702711596392.hostingkunde.de)
But there is still one problem with a single database entry:
The field “theme_mods_catch-fullscreen-pro[jetpack_testimonials][page-content]” is not saved properly.
All other fields work just fine, but this one just won’t save the additional content.
Can you help me with this please?