This dialog is opened when I click on "Check for more on Internet" The message says "Select your provider from the list below or click advanced if your provider is not listed", but there is no "advanced" button. (see screenshot) Reproducible: Always
Created attachment 97184 [details] Screenshot
I confirm it. Perhaps an old feature. I will fix it.
Git commit 9cb342c923d37d797fb21674385356eee3981599 by Montel Laurent. Committed on 14/02/2016 at 06:36. Pushed by mlaurent into branch 'master'. Fix Bug 359363 - Incorrect message in Select Provider dialog FIXED-IN: 5.2 M +1 -4 accountwizard/ui/providerpage.ui http://commits.kde.org/kdepim/9cb342c923d37d797fb21674385356eee3981599