Thanks for your reply @Steven_Kami ,
No Changes on the Wifi Router settings at all. Camera is like 40 CMs close to the router. Location permission is granted to the App. The power source is normal electricity socket using the power plugin coming with the App.
Btw, check any Youtube videos or forums and you will notice that many users are facing the same issue. The camera works fine for a couple of months then it stops working/connecting suddenly.
Here is a sample of the comments, it works for a couple of months then stopped working!