Well, That can happen to most of us - cause Not Everyone can be Online EVERYDAY! ( - I AM! 😉 ) 

*So don't stress that noone answers your question 'Who's online?' u just typed in Conversations - just try to message a few friends one by one, saying 'Hi' or 'What's up?' in their Inbox... - If they don't answer - they're probably not online...

💠 So you can message My Inbox then! 😁👍

- I most probably Will be Online - & I will see your message, so I Will Answer!  ^_^ 👌

( & if the conversation goes well & we have time - we can talk for Even 2 or 3 Hours, if u like! :D )