Fix WooCommerce Empty Cart Redirection issue

My multilingual WooCommerce store that has 3 languages is suffering from an annoying “empty cart” problem on english and german version: shoppers add items, but at some point before completing their order the cart clears itself and they have to start over. This obviously hurts conversions, so I need someone who can step in, trace the root cause, and implement a stable fix.

Note: Plz only apply if you are really expert in woocommerce/wordpress not just knows page builder, new freelancers are most welcome who are looking to build their profile/portfolio and good feedback after good job!