Running direction of the winter tires wrong – help!

Hello! I recently bought new winter tires and found out yesterday when washing the car that the tire is running at the front right and the tire at the rear left opposite the running direction. Now my questions: 1.) Is this bad or what can this have for disadvantages? 2.) Does the tires wear faster? It is winter tires from Mabor (Mabor Winter Jet 2) Thanks already for your answer!