Plutonium

reply pleas

i dont have an internet conexion and i want to play t5 (black ops 1) however when i run the launcher without wifi its says running in lan mod i click ok ; then when the launcher enters its says fail to save log in credentials i put the correct user name and password and its dont connect so i cant run the launcher without wifi is this probleme only happening to me ? most of the time i dont have wifi so how im i supposed to run the game without wifi cuz in cant log in without wifi !!!! pleas guys i want a solution to run plutonium launcher and games with no wifi cuz my conty is a 3 world country