Hi @Lobsterass,
To avoid having the problem I suggest that you use the recommended way with Pro and WPML and that is the Pro itself and not the String Translation.
Please, create a new page and use Pro to add stuff there. Then use the bottom right flag icon for the other language inside the Pro. Then Click copy the existing layout, this will copy the current page and set it for the other language. Now you can use Pro to go to the elements one by one and translate texts.
For the current pages, they are already linked with the String Translation and you can not do the method above. That is why I suggest that you use the Duplicate Post plugin to duplicate the current pages, that will make the newly duplicated pages unlinked and then you can use the same method I described above to do the translation without a problem.
Thank you.