After Moses had given an order, they sent a proclamation throughout the camp: “No man or woman should make anything else as an offering for the sanctuary.” So the people were restrained from bringing more,
Jewish Publication Society of America Version (JPS1917) - Exodus 36:6 >And Moses gave commandment, and they caused it to be proclaimed throughout the camp, saying: 'Let neither man nor woman make any more work for the offering of the sanctuary.' So the people were restrained from bringing.