My apologies, I don’t think I was clear. On my website, in the top right corner it shows a cart icon (and then the amount of items). It will display this regardless of what page you are on in the website. So what I’m noticing is that I can see the items in my cart in the top right when I am on the cart or checkout page, but as soon as I navigate away, it goes back to displaying “0 items” in the top right corner. And then if I go back the cart or checkout page, it shows the items being there again. Maybe this is an issue with my theme, but I’m pretty sure it started only when I switched to this payment plug-in because I have never noticed this before.
Here is a link to my website if you want to test it out – https://www.foodsandfeels.com/