Display on multilanguage site

Hello,

I have just installed the plugin on a multilanguage website and I have an issue.

In the main language, it works just fine:

https://sanatate-prin-arte.ro/intervale-muzicale/

For the second language, it does not:

https://wellness-through-art.org/musical-intervals/

I mean, it show nothing. Has anyone idea what is happening?

Thanks

The page I need help with: [log in to see the link]