You activated the shield after he had already defeated you. He can plunder anything you have available up to 24 hours after defeating you, regardless of any actions you take to try to prevent it (short of disconnecting all plunderable buildings from your town hall until his opportunity passes or collecting everything before he gets a chance to plunder you). The city shield isn't a way to stop someone who already beat you from plundering you... it's meant to stop people from getting a chance to fight you in the first place, preventing plunder opportunities altogether.Forge of Empires
World: Mount Kilgore
I activated a 72-hour City Shield @8:00am Saturday
Solidgeoff plundered Warehouse @5:10 pm Saturday
Solidgeoff last attack on my city was @10:06 pm Friday
How is this possible?
1) Does a city shield NOT protect against plundering buildings?
2) Can you hold off plundering after a city attack for 19 hours?
Not really worried about the plundering, but would like to know if I’m wasting $$ on a shield.
Edit: uhm... @RazorbackPirate already answered you, but I didn't see the extra page before answering you myself. But hey... hopefully having two answers, worded a bit differently, is sufficient enough to satisfactorily answer your question.