Hi. Sorry for my English… 
Don’t know if it is Mac related, but…
I’m on MacOS Mojave.
Since a few weeks, I see only a few of my contacts, both in game and on battlenet application. Even when they are online. After a party with one of these missing contacts, See him in the list “Recent gamers”, but not as contact.
I tried the solutions found on blizzard assistance (deleting battlenet cache, deleting battlenet folder, changing password), but same situation.
So, I can’t see my contacts, can’t see when they are online, and can’t invite them…
What can I do ?
Thanks in advance.