Peel it off and have it redone. Once tint looses adhesion that’s pretty much it. If it’s recently tinted take it back and have them fix it. You could try to take soapy water and clean the tint and window and squeegee it but I wouldn’t get my hopes up.
Ok thanks, it's right where the window weather stripping felt from rolling it up and down starting to catch now and it must have grabbed some of the grease from lubricating the window.