That sandbox site is expired. It will be deleted after 7 days from last login. I created a new one for you to test with the same steps I shared above. hidden link
Let me know if you can replicate the issue on the sandbox site and steps to do that.
There is no data. How the **** has it been a month and you still have not solved anything???
Why am I even paying for support? Meanwhile customers contact me because of not being able to order. WPML is actively losing me business - thanks for that.
As I mentioned above, the sandbox site will expire after 7 days from the last login. And 2 sites were expired so I had to create a new one and update it in my reply.
In a previous reply, you said the issue does not relate to the custom code on your child theme:
You can now check on this sandbox site hidden link
Meanwhile customers contact me because of not being able to order
Can you please share some screenshots of this issue or share steps I can see that on your site? If it does not relate to the shipping class as the main issue of this ticket, I will help you split this issue into a new ticket for better handling.