Multiplayer Synchronicity issue

Hello, as usual, I have a problem creating a game with the multiplayer feature. The game consists of four layers, one of them being mine, I divided the students into three groups and made each group its layer, and they are required to write something specific in text on their layer. At the end of the game, I am supposed to display on the smart board what each team made, by pressing a button that hides my layer and shows the layer of this group, and indeed this happens, but it shows the layer of the group without anything they wrote.
I have set a timer for writing, if it is finished, an image appears as a cover over the text so that the team cannot write more, I have given the image a high z-order and the text a lower z-order, yet the image appears under the text.
So what is the solution?

Nobody to reply??
I’m waiting…