My add to cart button was not showing up either (didn’t change themes to test) but am using Astra. I fixed by going to Themes > Customize > WooCommerce > Product Catalogue and making “add to cart button” active again by ensuring it was visible (the eye icon).
Thanks for the tips, Kai! I am not 100% sure of the initial file problem, but for some reason I had left a space in the filename and once that space was gone, it seemed to behave fine.
Thanks very much Kai, I tried a one line CSV file as smaller test file, and that seemed to work, so will go from there!
