Yahoo Mail fails to add contacts to list,

Yahoo Mail fails to add contacts to list,

Despite the fact that some contacts are saved, these contacts are not populated so that they can be added to a List.

For example, I wanted to add the noor_moq@hotmail.com to the Geomolg List, but the system doesn’t show up this e-mail despite the fact that it is saved in the contacts as it is shown in the screenshot below

What could be the issue here?