Google translate tells me you said:
"The database has been created according to the document and the authorized user still cannot connect to the database Tip: This MySQL instance is not properly configured. Please follow the documentation for MySQL 5.7+ settings "
I am sorry, but the error message you are seeing directly contradicts your statement. The error really does mean what it says - your database is not configured correctly.
I would expect it to tell you more about why though. Are there more errors reported when this is given to you? Can you read the log file?
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