I will try to answer the question before assigning the ticket to one of my colleagues.
Would you please give us the details of the issue you are experiencing?
Can you do as follows and see if it works ok?
- Go to your Dashboard > Pages.
- Open the edit screen of the original page. You should see a pencil/circle/gear icon in the sidebar options under the "Languages" section.
- Make a small change, for example, add an extra blank space at the end of a sentence/paragraph.
- Save it.
- You should now see that a circular arrow appears beside the 2nd languages links, this means that an update is required.
- Edit the translation again and save it up to 100% translated.
If not, I'd appreciate it if you could provide some screenshots and more details to be able to understand the issue.