The – or – only appears if you have a Gpay or Apple Pay account registered on the browser you are using. It looks like this either of these https://prnt.sc/XN7B0CFZNErk or https://prnt.sc/QlxidZ_1PiBf when switching to Storefront. The Woocommerce payments plugin support did this.
We have the same problem on both our websites using Xstore.
Login details attached.
Thanks, Ash