I work in IT and whitelabel doesn't mean its hosted on providers servers. It means that they sell the rights to use their tech and you can brand it as you own
you can change the front end, that doesn't really matter its just to change the appearance. The back end tech is what is white labelled
As i said it isn't an issue using whitelabelled tech. I just don't know why you didn't just confirm it here to end the discussion.