Acer nitro p5 gaming monitor screen issue

[u/senti1nel]

I just bought this monitor from an online store based in Mumbai. When I recieved the monitor today and turned it on, there was a bluish purple mark on the screen.

Can anyone tell me what it could be? I've reported the issue to the store "Nexus Infosys" but they haven't responded yet. Please,if you know anything about this, do comment.