Please read this and follow these guidelines before opening a new thread:
Update Polylang to the latest version. Older versions are not supported
Search the forums for similar threads and see if any of the proposed solutions work for you.
To test what’s wrong, disable all your other plugins and switch to the default WordPress theme for a bit. If the problem persists, open a thread, if not, figure out which plugin is the cause of the problem and open a thread mentioning both plugins.
Finally, if you decide to open a new thread, please follow the following guidelines:
Add the tag ‘polylang’ in the thread
your permalinks settings
if you are using a static front page
your Polylang settings
Then describe your problem. Please be precise and concise. A link to your site can sometimes help.