Having sentinel doesn't change the fact that starting a masternode doesn't broadcast it across the network.

Did you try what I replied earlier about checking from a different node whether or not it can see the masternode you setup? It doesn't. Something is wrong. There are no masternodes listed in 'masternode list' which there should be if the masternode setup is working properly.

I've tried to setup a masternode and it 'masternode list' only shows the presence of that masternode when I check from the node which is running the masternode. It doesn't appear if I check from another node.

I still can not see the masternode which you have set up.

If bitenx is not cloned from Dash, please tell us what coin bitenx is cloned from.