If you have unread messages from one of your Supporters, the message button would look like this:
The number at the top of the button shows you how many unread messages you have from that Supporter.
To read messages, touch the "Messages" icon.
All messages (read and unread) will be shown according to time/date sent. The most recent message will be at the top.
All unread messages will show a green marker on the left side.
The reply options chosen by the Supporter who sent you the message will appear below each text or picture message. To reply, simply tap on your preferred answer.
Tapping on reply buttons will remove the green marker on the message.
Note: All the messages you receive are only from your Contacts that are on your Lumin Screen. It's not something anyone can access like an email inbox.