A few months ago, I updated the pro version to fix a similar issue, and according to all reports, this problem in the Pro version has been resolved. However, the solution was to add the translation files in the same WordPress folder that WordPress saves its translation files, so it’s very strange that the free version is experiencing this in some cases.
Could you provide some more information on What you seeing?
What language is your site in and what language is showing?
Also Could you go to my website kccomputing.net and provide me with your site health information via the contact form?
This will help me determine if there is something unique about your site that may be causing the translations not to work correctly.
Here is a YouTube link with instructions on how to provide site health information if you need it: https://www.youtube.com/watch?v=3PmeaOeO4d4
Thank you.