Have you configure to use the correct template(s) in Admin?
Since you have two languages, check to ensure that each language with its correct settings.
And each language has its own layout boxes configuration.
Before setting the layout, frist select /change to the desire language first.
In Admin Home page, the upper left hand corner,
=> Define Language: (EN - English) - select the desired language.
Then configure the Layout Boxes Controller for EN - English Language.
And again, In Admin Home page, the upper left hand corner,
=> Define Language: (GR - ) - select the desired language.
Then configure the Layout Boxes Controller for the GR Language.
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