When I'm in the back-office, in Customers->Logged in customers
Only guests are showing..
We recently updated from 18.104.22.168 to 22.214.171.124 and had problems with login because of theme not containing a hidden session input in the login form. Now people can login but it won't show up..
Go to Solution.
Fixed this problem by going to:
System > Settings > Advanced > System > Log
and changed the "Enable log" setting from "visitors only" to "yes"