Strange! Is the error appearing on new orders when “test mode” is disabled? Or is this error only appearing on orders where “test” mode was enabled?
The error will not be removed from any order where “test mode” was enabled; however, it should not appear on any new order when “test mode” is disabled. If the error is appearing on new orders when “test mode” is disabled then please reach out to Shopify Support for further assistance.
While we’re not able to provide account-specific support via the Shopify Community at this time, we’d be happy to continue assisting you through live chat, email, or callback. Please visit https://bit.ly/3cJkx8V and log in to your account to create a support request.
Since this is the next step I’ve marked this reply as the solution for the benefit of others who may discover this topic. Thanks!