Titanfall Xbox 360

I have tried opening my ports, clearing cache, and testing xbox live connection and after doing it all it now loads to the screen where you can pick campaign or classic and that stuff but it automattically puts me into a mission called welcome to the frontier, which my friends say is the tutorial misson, and then it loads for 5 - 10 minutes and then disconnects from xbox live. I would like if I could find a solution that works because i bought the game the day it came out and now its 3 days later and I still haven't gotten to play it. ☹️

Also, when it is loading the welcome to frontier mission if I try using my phone or computer it seems as though my internet is basically absorbed into my xbox 360 and I cant access the internet on my other devices. I am not very educated in this type of stuff but do you think my internet possibly can't support the game. I have never had this problem in any other games so I wouldn't think it was my internet but thats the only valid reason I can think of.