I have logged into your website and checked that you are using a third party plugin to make the website multilingual.
Please deactivate it and then check back if the problem continues then deactivate all the third party plugins and tell me with the permissions to debug then we will troubleshoot with the theme plugins.
Which clears that the issue is caused by a third-party plugin, not by our theme. Sorry, but we could not help you with this because this is out of our theme support scope.