Why can’t this plugin add products to the cart page?

Hi, again me, since we use your plugin, many clients write us, that when they add a product to cart and go to cartpage, they get the message No products in the cart and the cart is empty. I tried it many times and i really see that its true. When i put the product a second time into the cart, then it works.

Check: shaveclick.ch/?coupon=test

Maybe sometimes it works but often it really does not work.

We use WP Rocket for caching, i read something in google that this could may be the reason wjy this happens.

Can you please urgently help fixing that?

The couponcode “test” is just for testing.

Please contact me as soon s possible.

We also have second shop: linsenklick.ch/?coupon=test

Here same problem. 🙁