thanks Syahir,
I disabled and deleted that plugin but it didnt solve the problem.
at the next day (this morning)I’ve disabled all the plugins – and I’ve tried to check which one cause the problem.
but than something at the appearance section at the WP-ADMIN dashboard caught my eye – it was the MENU option. sp i made few clicks there and it looks like the problem will be solved with few mins of work.
thanks again mate for the great theme and thanks for your patience.