The sharepoint admin team had activated the publishing features for me in order to have the content query webpart available. Since then I have been trying to add the content query webpart and any other webpart with a lot of difficulty.
First, I couldn't update the existing webpart of my page because the edit webpart menu couldn't showing, Those webpart was webpart added before the feature got activated.
Any help on how to solve this. I am using Internet explorer 11.