WhatsApp questions.

[Pibplob]

I was in a group chat not too long ago and was added by a friend to an established group.
I have just looked for the chat and it's not there anymore. What does this mean? I'm guessing someone has deleted me from the conversation? Thanks if you can help. I don't know much about it and would like to know what's happened. If someone has deleted me, would it have to be the person who started the group up?

Have you deleted or reinstalled the app recently? I get deleted from groups when that happens.

Only the admin normally the person that starts the chat unless they leave can add or delete people! I'm not sure about the rest when you leave a group it stays till you delete it so But I don't know how it works if you are deleted