Can I submit my old highscores online without having to beat them again?
Solution 1:
Since you had the auto submit turned off I would highly doubt that they would let you submit your own score. Most games that do global high scores based on a local game will not allow you to submit a high score that was not done through their system. It is unfortunate, but there are ways to manipulate your scores on your local so you could make it appear that you scored higher than you actually did.