Preview watermark even after removing it

So im programing my first game in unreal engine 4 and this happens…
I first had this bug in both edit mode and simulate mode but i fix the edit mode but cant fix the simulation mode

Video: [link text][1]

[1]:

THANKS SO MUCH!!!

Hey ArrowFX,

You need to build your lighting. You can do this by pressing the big button at the top-ish center of your screen called, “Build”. This will build your maps lighting and remove the “preview” text.