Polylang does not translate solid-construction theme Archive Titles

Hi,
I am using the solid-construction theme for creating polish-english website.
Polylang plugin works well with the theme, exept translating the following strings:
– Featured Content Archive Title
– Testimonial Archive Title
– Service Archive Title
– Portfolio Archive Title
I can not find items coresponding to above titles in “Strings translations” tab of the Polylang plugin.

please help me:)
Grzegorz