Contenant alimentaire rectangulaire en plastique avec couvercle 40 œufs Omnlware

I like the appearance of this and how it holds so many eggs, will be using this as a deviled egg holder. However was a bit disappointed in the top lid locking feature. I could not get one of the side tabs to lock into the main holder so the 3 other sides are holding it on. Am worried when I go to use it that it might come undone when carrying it by the handles.