Enable greek characters for Series Name fields

Using Chart Data Existing Database option
I need greek titles for Series Name at Axes Parameters session.
The version i am using is "vChart 2.9.8 by WDMtech"
Also i need dates in Greek.
Is there a way to translate the whole frontend component?

Hello,
We'll look into Series Name issue. You can change all the text strings used in component in the file com_vchart/language/en-GB/en-GB.com_vchart.ini And dates would be displayed in the same format as these are available in your Database. Please share your backend & FTP login credentials via Contact us form, We'll correct the series name issue.

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Issue has been corrected on your website. Please check. We have also launched a new version with this fix i.e. 2.9.11