Been playing a few days now, not had any problems with resources until today. I logged off yesterday and had roughly 40/5/9/20 per minute on resources, I logged back in today and hardly had any. I had stone walls building so I understand where the stone has gone but I hardly had 5k food, and gold was only at 4k. I'm not a maths genius but at the per minute ratio, I should have been well over that.
Are there certain conditions I need to meet for resources to gather while I'm offline? Any help/info would be great