Problem: The client is trying to publish a webpage with slightly different text content in the translation.
Solution: If it needs a different structure for the translation, you can switch to the WordPress Editor to complete the translation without using the WPML translation editor. It's important to note that the two editors are not synchronized, so if the you switch to the WordPress Editor, you will need to retranslate the page. More information can be found here: Using different translation editors for different pages.
Please be aware that this solution might be irrelevant if it's outdated or not applicable to your case. If so, we encourage you to open a new support ticket. We also highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If you need further assistance, please visit our support forum: WPML support forum.
