upsell isnt triggered

Hello, how are you? This marks my third purchase from your store, and I’ve consistently received outstanding products. However, I’ve encountered some challenges while working with the Boost Slates plugin. I’m currently using Elementor/UX Builder to design my pages, and I’ve noticed that when I create a button labeled ‘Download Now,’ ‘Add to Cart,’ or ‘Buy Now’ within the landing page, the plugin doesn’t seem to get triggered. It would be incredibly helpful if you could modify the plugin so that it activates when one of these button labels is used.

Could you please assist me with this matter?

Here is the link to the specific product: https://yarnera.com/product/dog-balloon-crochet-pattern/

Additionally, I’ve noticed that the layout of the upsell on the mobile version isn’t very user-friendly. I’d like to replace the basket icon with text and ensure that the ‘Proceed to Checkout’ button is prominently displayed in the popup, making it clear to customers that it’s the next step in the process. Of course, it should still allow customers to continue adding more upsells that appear on the screen.
I tried to attach the screenshot if you can make the button clear inside and change the icon with (ADD to cart)

I appreciate your assistance with these adjustments.