S2719DGF, colored vertical lines appearing, disappearing

Hello!

I just bought this S2719DGF and from the first hour of use I noticed that sometimes a blue or a purple vertical line appears in the right half of the screen. It appears and then it disappears after a few minutes. I thought my PC video card has a problem but I have my S2719DGF connected to my PC and to my PS4 and it appears on both of them. Can it be fixed? Did anyone had this problem before? What should I do? Do I need to return it? I will attach some photos with the monitor.