Hi,
I am having a couple issues with One-Page Checkout than I can't seem to resolve. Any help would be appreciated.

I just did a fresh install of zencart 158a with a database upgrade from 155f (all previous addons removed), One Page Checkout version 2.4.5, using xampp(php) 8.2. I'm using freeshipping, item, and storepickup. With the shipping estimator turned off.

Issue 1) While using guest checkout, I can't seem to delete the last remaining item in the shopping cart.

Issue 2) I'm getting the message "Either the available shipping options or your chosen shipping method's price has changed. Please re-select/review your
desired shipping method." sometimes when going from the shopping_cart.html to the checkout_one page. I don't see a reason why it happens
sometimes but not others.

Issue 3) the continue shopping button takes me to the checkout_one.html page (I would assume it should take me to the main index.php page)

OnepageCheckout log:
one_page_checkout-899-2023-03-24.zip