Eventhough I connected the nets, Its showing unrouted net constaint. What am I doing wrong here ?
While testing this feature I see a potential problem. I made two segments of one net just barely touch each other and it is showing them as connected with 0 length unrouted. However, if you did this on an actual PCB there is a chance it would have insufficient copper connecting these. This might happen, for example, if you connected a net to a pad on a component and then nudged the component over such that the net ended up just barely touching the pad.
Here is a close up showing the hot spots and just how poor a connection these might have but still say they are routed. If I reduce the route trace widths just slightly then the unrouted connection length changes from 0 to 11.528mil.
Have a look at Design Rules > Routing > Width .... set widths appropriately and select "Check Min/Max width for physically connected copper"
selected "Check Min/Max width for physically connected copper
Still showing error.