I managed to sort out my problems
Just incase you have the same problem!
On the login page
I configured the hotspot address to point to ip address of the router local interface and I am now able to get the page!
secondly the problem with the instability of the router i managed to sort it out with upgrading my routeros software from 2.9.27 to 2.9.28...ilts stable now....
Hope it helps someone!