I have a problem with new words to link

Hello. I have small problem. When I make my own list of new words and import it into the Lingq, I can not make all new words (blue colour) as the links (yellow colour). I can only choose option: to ignore the word or to know the word. But then the word is becoming neither blue nor yellow, just white colour. On the other hand, for example, if I read any text in the Lingq, and there is a new word, then I can make it as a link. Why is that? How can I solve this problem? Thanks in advance.

@Solena - Is this just with a specific lesson? I’m not sure I quite understand the issue. If you can send over a screenshot that would help.

Thank you for the replay. I recorded the small video where I try to create new linq. I hope this will help you to understand my problem.