Hello,

As I have two different product lines with two different header and footer I will need to create two account pages in order to keep the header and footer consistent.

Woocommerce does not provide such an option, you would better consider multisite

This is not in regards to the filter but to the category widget. The category widget shows always all categories and not the one for my product line.

Please make the full backup of your site and check the issue on the Storefront theme to detect if our theme causes the problem. Storefront is a free theme developed by WooСommerce.

6) Are there any elementor widgets for the account, cart, compare etc. icons? We have a own checkout-page and would like to place the same icons there?

I am afraid there is none.

7) How can we change the background color and font color for the cart-sidebar?

The theme settings allows to set the dark scheme of the site and the light scheme, if you need other colors you will require custom CSS.

8) How can we have a second mobile menu – for our second product line? Where can we override that setting, is it also possible in the woodmart settings?

I am afraid it is not possible. The mobile menu is set in WordPress and the theme does not influence that.

If you have any questions please feel free to contact us.

Best Regards