Hello, @Andrzej
Please write in English.
Lazy loading works via JS. Make sure that you don't have any errors in the browser console. This affects how scripts work.
Here is a link to the API error message. This is observed in everyone. Войдите на Facebook | Facebook
An error adding an account is the same API error.
When you delete a plugin, snippets are saved. This can be configured in woody's settings. Check it.
Still, there is an error in the snippet code. After you enabled DEBUG, did you add shortcodes to the page and update it?