Hi @XavierL5. This is a noted issue we've seen with our product blocks and it is being reviewed. There is a workaround to delete the block or insert a product. Click into the block and under the header, you'll see a greyed-out toolbar that says Insert Product and has a trash can. Using a mouse with a scroll button or a touchpad (not the scroll bar on the right side of the page), scroll to the top of the campaign until you see the toolbar highlight where you'll be able to select either "Insert Product" or the trash can.
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