Problems Adding certain pages From IMBD to Listal

When I can not find a movie/TV series in Listal I go to the IMDB page that corresponds to the new item that I want to add, and I copy the link to the listal search box, and the page is created.

But there are items that I can not add to Listal and the following message appears: "Page not found - We could not find the page you were looking for".

As you can see from these 2 examples:
www.imdb.com/title/tt8168186/
www.imdb.com/title/tt2155399/

However in other occasions the page is created in listal but is not complete. Only the name of the director appears, and the name of the whole cast does not.

As you can see from these 2 examples:
www.listal.com/movie/280321
www.listal.com/tv/narcos-mexico

This situation is super annoying! Can anyone solve this problem?

This has been happening for over a month as well as several tv shows only showing partial casts...

Also noticed the second thing happening here:
www.listal.com/tv/mr-sunshine-2018
Missing cast and the year released

And sometimes like in this case
www.listal.com/movie/hold-the-dark
Partially missing cast