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Invalid or missing home team value on row 2.
Please check this post or this one for hints on how to resolve this.
can i filter rank table by user role ? ( i want to display just one user role users )
Only if you place these users in a separate league. Because otherwise I think it will mess up the ranking numbering. But if you want to try it without the league, you will need to write custom PHP code to filter the ranking array just before the plugin prints it.
i deactivate the plugin and re-activate it and it works, you are a king.