I recieve this message everytime even with a fresh new database
Do you mean the activation warning in bottom right of the screen? If so, yes this is unavoidable now, it will show up every few minutes from the start if you don’t use a license. I have the same issue and have just learned to work around it (I am a reseller so I am constantly working with many databases so won’t apply license to my development machine).
It looks like you are using a large display. Just double click the SambaPOS logo in top left and make it into a window (instead of full screen), then the activation popups won’t get so much in the way. Hope that helps 
You need to install License