Hello,
https://www.8theme.com/documentation/xstore/theme-translation/translation-with-wpml/
Make sure that the theme https://www.8theme.com/documentation/xstore/theme-installation/theme-update/ and Core are updated https://www.8theme.com/documentation/xstore/plugins/plugins-update/
After that provide temporary wp-admin access, so we can take a closer look.
Regards