Sorry but you seem to be asking very basic questions, I'd suggest getting the user manual and reading it thoroughly, and read through the posts on this forum to see how others get help.
For example you say everything worked ( I doubt it - I'm guessing something worked. Did you fly it? If not everything didn't work).
'Now it won't even connect' - to help yourself you need much more information. Why is it doing - what symptoms do you see, what have you tried yourself, what lights are displayed etc.
