I cannot see the emails for all email adresses I use

I use Thunderbird for managing all my email addresses, but because of some changes in the settings now I can see only emails for one of my email addresses (before all of them were displayed in the list). For checking emails sent to another email address I need to select it in another list, but I would like to return the way it was displaying before, so on left side there was list of email addresses and on right one - relevant emails for every of them. It seems to me that it must be changed somewhere in "View" menu point, but I cannot find this option. Here what I see now http://joxi.ru/LmGeK59iyBNaAl Could you please help me? Thank you, Claire