Hello,
I am checking the header on the home page and it absolutely corresponds to the Main header elements: https://gyazo.com/f21f45fc0e34214bbd293eb10b971f90
Please check this manual if you have problems on other pages: https://xtemos.com/docs-topic/how-to-set-different-header-for-specific-page/
I am checking the shop page and I see the widgets: https://gyazo.com/ea1fef1bafbaacb28098548b1a04b6da
Please install the free Classic widget plugin if you have not done that yet.
Then try to regenerate “Regenerate the product attributes lookup table” in Woocommerce > Status > Tools: https://take.ms/LGpvf
In addition, please check Woocommerce > Settings > Product tab > Advanced tab and disable Use the product attributes lookup table for catalog filtering.
If you have any questions please feel free to contact us.
Best Regards