Hello,
We have a solution, on 9.8.8, where a user received the "Order id does not match id of order" message in cart (I've attached the screenshot sent by our client) and couldn't finalize the order. Then the agent tried using the user's account and received the same message. Then the client as well. I've tried myself after a few hours using the same account, but I didn't receive this message any longer, so something must have been reset that it started to work again.
Also, in the previous months, we had two cases on this solution where the orders lost theirs order lines when the orders have been finalized. I've looked in the orders debugging info, and there were a lot of redirects using two different IPs intermixed, so there might have been a proxy or the user accessed his order from different devices. In this case it seems to be a concurrency problem with the cart.
Regards,
Emil
