Steps
within limit like at 50 mb stage disconnect
from vpn Goto setting open settings
click - application manager
-> goto "troidvpn" app setting-->click on
"clear data" now open google settings app in
your mobile
Now Click >> reset ad. make a twice reset
now open troidvpn select server
-> choose udp
-> choose different rport & lport-> click
on remember me
-> nd then connect follow this upper steps
at every 50mb stage for unlimited use...