Mocha Pro Remove Issue! Need Help!

Hi Guys,
Im pretty new to using mocha only used it a few times. Recently working on this scene for a short film using mocha pro 5 to remove this number 15 painted on the door in my scene. I ran into an issue in the middle of the scene when my subject the actor passes over the area were the remove was made the remove is being revealed when the actor passes over the area its looks like a blocky part of the actors face and wall forming together. I gonna upload an example of whats happening in the remove hopefully someone can walk me threw what I’m doing wrong or give me some helpful tips to fix my issue. youtube link here: - YouTube

You’re going to need to mask out his face in the foreground.
Any layers ABOVE the layer you’re trying to remove will occlude the removal and not try to remove from those areas.