Shared links being language specific

Hi

I am having a small problem with the links that are being shared by auto post on facebook and twitter.

Basically what is happening is the languages are getting crossed, so giving my links a 404 error.

So
https://www.multikingdom.com/index.php/tw/mainmenu-blogpage-tw/pancake-day-pancake.html
Is becoming
https://www.multikingdom.com/index.php/tw/mainmenu-blog-page-en/pancake-day-pancake.html
Or
https://www.multikingdom.com/index.php/en/mainmenu-blog-page-tw/pancake-day-pancake.html

Please take a look at our twitter account and facebook page and look at some of the links.
https://twitter.com/multi_kingdom
https://www.facebook.com/multikingdom

I have just found the 'Multi Lingual Posts' selection to allow bloggers to post in different languages, but this option has always been switched on and I have not had a problem before.

It has only happened since we stopped bloggers posting directly to the site and we not have them submit for review, before we then post it. We also turned off auto posting before turning it back on again, could this cause a problem

Is it something to do with this? I try to renew the token for facebook, but it doesn't do anything? It says it ran out in October, could me turning off the auto posting and turning it back on again have stopped the access? But not all the posts are affected?

I am very confused as to why this would be, please could you shed some light on the situation.

Many thanks