So... I got it working, but ! It seems that i need to add +51 in each of my contacts now in order to have them in Yappari, I tried and yes that's the only way that i can get them to show as contacs...

The problem is that i have like 240+ contatcs (not all of the have Whatsapp) and doing each one seems a little silly.

Can you take a look at it ?