Sorry for our confusion.
You can activate the header promotion bar on the theme option panel->header->other elements->promotion content like screenshot.
We already set the option, so you can see the top black bar on your website.
You can customize promotion bar content in the html blck->header promo bar.
And for the shipping tab problem:
You can remove the shipping tab on theme option panel.
That tab is additional product tab which is made on lorada theme.
Please go to theme option panel->single product->filter tabs.
In there, please remove title and content field values.
And you can enable the sticky add to cart on theme option->single product.
if you enable the sticky add to cart for the special product, please go to admin product page, and enable the sticky add to cart button like screenshot.
Then, you can show the sticky add to cart for the some special products. Not all products.
And you can select the group product 2 option on theme option panel->single product->page elements->gruop products position like screenshot.
In there, please choose "after product summary". Then you can see the group product 2 layout.
And this website is our lorada documentation.
In there, you can get the some information.
But if you have any questions, please feel free to contact us without hesitation.
Best Regards, C-Themes