To log out :
On the website, go on " My account " > " Log out " .
On the app (IOS or Android) : Click on the icon of your account, at the bottom of your screen, then go to your settings and " log out " .
To log out from your FB, Instagram or Google account, go to :
" My account " >" My preferences " . In the section " Social networks " , unclick the network that you'd like to remove.