not sure if i missed it or the tutorials missed this out, but i have found out what is the problem.
first: the findplayerstart warning only means that the menu level doesnt have a player start and so it spawns player at 0,0,0 - which is correct
the actual issue was this: “LogNet:Warning: Travel Failure: [InvalidURL]: Invalid URL: /Game/menu”
and it was only beacuse i didnt know that i have to specify the maps that i want to include in the packaged game
problem solved!