Translation Links not working

The plugin was working fine but now i am having a big issue. When i link the spanish page with the english and hebrew page on my back office, it does not work ! Let’s say on the spanish post, i added the name of the english page on the sidebar (there is the + button to add the english page). When i save the page and reload the page, the link disapear and the website does not link to the article in english.

Please help

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