Hello Rose,
the plugin should add the buttons in the selcted page:
https://postimg.cc/yJQdzKy2
here the buttons in the product page in the live site
https://postimg.cc/G8W5BBjY
in the live site the buttons was not showed in cart and checkout anyway, but since woocommerce has recently discontinued the standard paypal checout and my theme is a discontinued one I was no able to ask support to its developer to fix it.
Thanks in advance for the support