YOAST pugin doesn’t work anymore

YOAST tab on my wordpress interface is not working anymore. I only see the tabs “SEO” and “readability” but I can’t adjust them as usual including meta description and keyword and checking the overall peformance of my article/page (green/red/orange flags). I updated to Yoast 13.5 version but it didn’t resolved. Google search results still contain the text I arranged in the past but I can’t see it anymore on my wordpress interface so I can’t modify and I can’t insert new content. Pls advice, thank you

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