On level 267 I got 100000 points(Gold star), but wouldn't let me go to the next level.

Amanda-3

The level is timed, I got the amount of points it had asked for, but when the time ran out it told me I had failed the level, not sure why it did this.

aCe

You need to read the little pop-up that appears at the end of the level. This will tell you why you didn't pass it. This way you will know and you can avoid it the next time