Hi @przemyslawcioch,
Thanks for your comment.
We are sorry to hear you’re having trouble with Yoast SEO. Can you please make sure you’re running the latest version of WordPress 4.9.8, Yoast SEO 8.2, your plugins and your theme? If you’re already up-to-date and the problem persists, we’d like to have additional information:
- Does the problem still occur when all non-Yoast plugins are deactivated and your theme is on Twenty Seventeen?
- When you activate Yoast SEO, do any errors or warnings appear in your server’s error log? If you don’t know where to check or do not have the privileges to check the error log, please contact your web hosting provider. They’ll be able to provide the related error.