All good here

Please, note that you don't need to use any extra plugins for theme for
External products. It's regular option of Woocommerce

Hello okay got it:

"WooCommerce External Product New Tab"

This was the one :)

Thanks

make sure that you use actual 15.4.4 version of theme. Make sure that you
don't have any plugins which manipulate woocommerce, you can disable them
one by one. Make sure that you don't have anything in custom code areas.
make sure that you don't use Demo products and you created your product as
NEW product and not by copying demo products

Hello the product layout is Default with Sidebar.

I added the offers by creating a single affiliate product link with price and coupon. Please see attachment.

Thanks and regards

You missed to send information how you added offers

Hello, on my Woocommerce Product pages, the CTA buttons are showing duplicated (as you can see in the attachment).

Also, I would like to edit the existing layouts using Elementor Pro. How can I do that?

Thanks