Could you provide us some information if the Website and cart were working good before you have added your domain to your Cloudflare account?
On your Website, there are some Content Security Policy ("script-src") errors showing up to me, if that could be also related to some issue in further investigation.
The thing that happens to me is:
- When I add a product to a cart, it is successfully added - cart (1).
- When I add more products, again, all are successfully added to the cart - cart (4).
- When visiting cart page, number is (4) within the car-icon, but the cart is empty.
Moreover, I got 403 XHR error returnet for the request https://inaluna.com/?wc-ajax=wc_stripe_get_cart_details with the value of -1.
As if you are using cPanel and Apache, is there a way to temporarly disable/turn off the mod_security option in cPanel?
Could this link below be related to this topic?:
https://wordpress.org/support/topic/wc-ajaxupdate_order_review-403-error/
Maybe this way here can help a bit solving your issue too. Give it a try:
https://wordpress.org/support/topic/wc-ajaxupdate_order_review-403-error/#post-9653485