If your OmieBox is leaking, first re-install the lid seal or the O-ring gasket. 9 out of 10 times it’s because these two items are installed improperly. Follow the installation instructions and double check that the gasket is smooth and even. Kinks or waves can cause leaking.
After packing food, close the lid and latch it. Be sure to use the palms of your hands to push along the entire surface area of the lid. This helps to engage the seal.
Did you accidentally put it in the dishwasher? If you did, then this could explain why it’s leaking. The dishwasher’s high heat could cause warping, which is why your box is leaking.