Problem with WPML Language Directories

The problem is that in the my account page it gives the customer referral url that doesn’t work because it clearly added language directory automatically like this /ar?raf=ref7326217 but it has to be like this to work properly /ar/?raf=ref7326217

Also the language directory in the url that the customer sees changes according to the language that he is using, This isn’t a problem just a note

Arabic:
https://prntscr.com/ku0fpn
English:
https://prntscr.com/ku0fxb

And you can see that the urls provided by the plugin doesn’t work unless you added slash after the language directory

https://www.kcsstore.com/en?raf=ref7326217

https://www.kcsstore.com/ar?raf=ref7326217

The page I need help with: [log in to see the link]