whatsapp do not display in contacts.

[upup]

Hi,
I got a x cover2.
I added people on my contacts.
Some show in whatsapp and some not, but they all are in whatsapp.

How do I go about to see them all in my whatsapp.

 

[NeonNinja]

Get them to text you.

 

[upup]

Get them to text you.

Will do, but why does is not show?