The Reply Option is also bad in burn note.

Look at G Mail.

All is clear.
Juanita send a message.
It is very clear what action I must take to reply to her.
I must click a button  .

Now look  at burn note.

Since we  do not see any message at first...,it is not clear at all what is the mail on the top center of the page.
"Why the hell that E Mail is there ?" -Its the first thought.

How should be  : Message from  ppaul2014@gmail.com
Preferably the mail of the sender should be on the left.

In G Mail All the senders are on the left.
Why the HHHh66&####   is the E Mail of the sender in the top center of the page ?

Second error :

No instructions at all  about how to read the burn note. .
The idea of hovering the mouse over  a certain space is nice.., but  you need to tell the readers about  it.

Is that so difficult to grasp ?